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project of circuit potency lineal RF amplifier with BLY90 for Fm transmitter or vhf transmitter Circuit for lineal amplifier for VHF with power source and printed circuit board, using the transistor Bly90 It is to be used as amplifier of potency of RF in the high strip of of the power source that should be capable to supply a tension of 13 volts with a current of 10 amperes. it demands right care in the assembly of the source. Terrified armored transformer, and three shocks of RF to filter the components of high frequency. XRF1 and XRF2 are 30 you turns of wire 25 AWG in a nucleus of ferrite of 1 cm of diameter and 5 cm length. It can use one of a source at/atx bad, it is easier. XRF3 are 100 you turns of wire 25 AWG in a ferrite nucleus and 1cm of diameter for 5cm of length. Or use an usually found in the exits of sources ATX’s. something around 100µH. The capacitors C1, C2, C3, C4 should be ceramic of 600 V or more and the capacitors of 10nF are for 100v. RX cannot be of wire. Power supply circuit for the rf lineal amplifier Orijinal görüntüsünü görmek için buraya tıklayın. 512x223 px. About the transistor BLY90 The Transistor BLY90 was developed to work in the classes THE, B and C, with 12.5V current of 8A. For applications above 175MHZ. Below we have the diagram circuit of the amplifier using an only transistor BLY90. All capacitors should be ceramic. The resistor of 10Ω for 1 w should not be of wire, the entrance impedance and exit is of 50Ω , soon it should be linked with cable of 50Ω . It should be observed the legal restrictions as the operation of that equipment type. Diagram circuit of the project for the rf lineal amplifier Orijinal görüntüsünü görmek için buraya tıklayın. 522x297 px. Printed circuit board for the lineal amplifier with bly90 Below we have the drawing of the printed circuit board of the transmitter, observe that the components are mounted beside the copper and with the terminals the shortest possible, use heatsink in BLY90. lists of material for assembly of the lineal RF potency amplifier Power Supply RX = 22KΩ 1W C1,C2,C3,C4 = 100nF 600V Ceramic C5,C6,C7,C8, =10NF 100V C9 = 100NF C10 = 4700µF C11 = 2200µF D1,D2,D3,D4 = 1N5401 or equivalent. XRF1,XRF2 = 30 turns of wire 25 AWG in nucleus of ferrite of 1cm diameter for 5 length. Optional, use a shock of RF of a computer source, those of the entrance of the net. XRF3 = 100 turns of wire 25 AWG in a nucleus of ferrite of 1 x 5. T1 = Transformer of 12 Volts for 10 Ámperes with screening. Several = box, plugs, cables, etc. Amplifier of RF Q = BLY90 R = 10Ω 2W C1 =15PF C2,C3,C4,C5 = 100PF C6 = 470NF C7,C10,C11 = 470PF C8 = 47PF C9 = 56PF C12 = 22PF CV1,CV2 = TRIMMER 4 – 40PF CV3,CV4 = TRIMMER 60PF MAX. L1 = 3 turns of wire 24 AWG with diameter of 7mm, nucleus of air. L2 = Shock of RF of 0.22µH. L3 = 15 turns of wire 24 AWG around a resistor of 47Ω x 2W (it doesn’t serve as wire) L4 = 3 turns of wire 24 AWG with diameter of 7 mm, nucleus of air. L5 = 1 turns (sees fig. below for details) L6 = 3 turns of wire 24 AWG with diameter of 7 mm., nucleus of air. L7 = 4 turns of wire 24 AWG with diameter of 7mm, nucleus of air. Several = printed circuit board, antenna, cables, heatsink, box, etc. Detail of L5. That project is just for ends of didactic test, that doesn’t implicate in any responsibility of the idealizator about the non operation or illegality of operation of the equipment.

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POWER SUPPLY WITH ADJUSTABLE OUTPUT 0-15V / 1A The objective of the schematic is to create a power supply that would produce an output of 0 V to 15 V at 1 A current. - 2N3055 – a complementary Silicon Epitaxial-Base planar NPN transistor mounted in TO-3 metal case for use as power transistor- Bridge Diode – also known as bridge rectifier which has four diodes arranged in a bridge configuration where the output voltage has the same polarity with either polarity of the input voltage The construction of this power supply schematic is very simple in such a way that the components used are easy to be located while the cost is very cheap. With the biggest provided current at 1 A, the output voltage is adjusted for minimal ripple effect and stabilized in the range of 0 V to 15 V DC. This is made possible by the standard transformer output of 1.5 A with a primary winding voltage of 220 V and secondary voltage of 18 V. The current is being limited by the Zener diode D1 with a rating of 18 V and 1.5 W. The linear potentiometer R2 is responsible for the regulation of current. The power transistor Q1 is a classic type that would require to be placed in a suitable heatsink to suppress the high heat dissipation during the operation of the circuit. The heat dissipation will be continuous during the presence of the highest current. The bridge diode GR1 will provide full wave rectification from the AC input which will also convert the incoming alternating current (AC) input into direct current (DC) output. One good feature of the bridge diode is maintaining the same polarity of the output regardless of the polarity of the input. R1= 56ohm 2W R2= 330ohm Lin. pot. C1= 2200uF 35V C2= 100uF 35V C3= 10uF 25V C4= 220uF 25V C5= 100nF 100V GR1= 4 X 1N4007 Q1= 2N3055 T1=220V@18V 1.5A D1= 18V 1.5W zener The 15V/1 A power supply may be used to handle home automation control system which can be powered by 12 Vdc. They can be made into power adapter models to support a wide variety of applications such as TFT monitors, broadcasting, laptops, digital cameras, telecommunications, PSP’s, routers, notebooks, guitar effects pedals, KVM extenders, iPod’s, scanners, CCTV’s, printers, cassette players, radios, and other portable applications. POWER SUPPLY WITH ADJUSTABLE OUTPUT 0-15V 1A.pdf Alternatif Link FileSwap.com : POWER SUPPLY WITH ADJUSTABLE OUTPUT 0-15V 1A.pdf download free

Circuit audio power amplifier using integrated lm4782 overtureTM for three channels of 25W with mute and stand-by LM4782 is audio amplifier of three channels capable to supply 25W of potency for channel. LM4782 uses the system of protection of National Self Peak Instantaneous Temperature (˚Ke) (SPiKeTM). Spike protects the exit of the lm4782 of on tension on load, short of the source for gnd, temperature protection and picks instantaneous of temperature. Each amplifier of the lm4782 has a mute circuit and internal stand-by, that can be controlled by logic it expresses. LM4782 can be configured to be used in bridge or in parallel way without complications, it exists several ways to use integrated him. To know more on spike it seeks for AN-898 in the site national.com . Description of the operation of the circuit of the amplifier with lm4782 The circuit described here it is treated of the application suggested by the national semiconductors for an amplifier of potency of three channels with having integrated lm4782. To determine the heat-sink to be used it sees the datasheet of the lm4782. In the way stand-by the drain of current of the source VCC is less than 30µA for all amplifiers and chain drained of the source VEE is typically of 8mA. Bypassing Capacitors To eliminate possible oscillations or instability in low frequency high frequency either is used a capacitor electrolytic or of tantalum to absorb variations in low frequency and a ceramic capacitor to prevent feedback in discharges frequencies. those components are placed in the power lines. Filter high raisin The combination of it Laughs with ci it creates a filter high raisin. The frequency answer is determined by those two components. The point of -3dB can be found using the equation below: fi=1/(2ÀRiCi) (Hz) If a capacitor of blockade dc be used, there is another filter it passes discharge servant with the combination of Cin and Rin. When great values of Rin are used it can happen oscillations in the exit. To determine the type of the heat-sink and other assembly configurations it sees the datasheet of the lm4782. Source for the circuit That proposed circuit requests a symmetrical source of +-25volts that is capable of ?¤ “teão is necessary that is regulated. Just use a good transformer, rectificators and great capacitors of filter of at least 10000µF. The transformer uses transformer torodal preferably, they exist virtual stores that sell transformers and they dispatch for the whole brazil. Schematic of the circuit of the potent amplifier with lm4782 Orijinal görüntüsünü görmek için buraya tıklayın. 524x566 px. Printed circuit board (couple face) side of the it welds suggested by the national for assembly of the potent amplifier of three channels Circuit board (couple face) printed side of the components suggested by the national for assembly of the amplifier Assembly of the components of the amplifier in the board silkscreen of the board of the amplifier It lists of material for assembly of the amplifier Name value tolerance type /description RIN1,RIN2,RIN3 33kP6; 5% 1/4 watt RB1,RB2,RB3 1kP6; 1% 1/4 watt RF1,RF2,RF3 20kP6; 1% 1/4 watt Ri1,Ri2,Ri3 1kP6; 1% 1/4 watt RSN1,RSN2,RSN3 4.7P6; 5% 2 watt ID 2.7P6; 5% 1/4 watt RV 5.1kP6; 5% 1/4 watt CIN1,CIN2,CIN3 1µF 10% Film metallic polyester CN1,CN2,CN3 15pF 20% Ceramic Ci1,Ci2,Ci3 68µF 20% Ceramic Radial / 35V CSN1,CSN2,CSN3 0.1µF 20% Ceramic CV 0.1µF 20% Ceramic CS1,CS2 0.1µF 20% Ceramic CS3,CS4 10µF 20% Radial Ceramic /50V CS5,CS6 2,200µF 20% Ceramic Radial / 50V S1,S2 Key SPDT (on-on) J1,J2,J3 PCB Montage RCA Jack J5,J7,J9,J11 PCB Banana Jack – Black J4,J6,J8,J10,J12 PCB Banana Jack – Red VZD 5.1V Zener Diode 1W U1 LM4782 TO-220 For more information to do download of the datasheet of the lm4782

1.8W Buck Topology Power Supply with VIPer12AS

Automatic Lawn Light with LDR

Installation: You must start by installing a complete distribution, as described below. Then check for updates, which are installed on top of the distribution. The easiest way to bring the distribution to the latest recommended version is to use the Combined Update. Complete Distributions: Here are the instructions for installing the complete FreePCB distribution. Download the latest version of the software using one of the links for "Complete Distributions" below. You can choose from: An installer application, with a name like FreePCB_1200_setup.exe.A self-installing archive, with a name like FreePCB_1200_bin.exe.A zipped archive, with a name like FreePCB_1200_bin.zip Install the software into a folder on your hard drive such as C:\FreePCB or C:\Program Files\FreePCB. This folder should now contain subfolders as shown: The subfolder bin contains the FreePCB.exe executable and the default configuration file default.cfg.The subfolder doc contains documentation (such as this User Guide)The subfolder lib contains the core footprint libraries.The subfolder lib_contrib contains footprint libraries contributed by users.The subfolder lib_extra contains less commonly used footprint libraries.The subfolder projects contains folders for each projectThe subfolder src will be empty. You can install the source code into it using one of the "Source Update" links below.If you used the installer application, you were prompted to create a desktop shortcut to start FreePCB. If you used one of the archives, you can make a shortcut manually. Open the .\FreePCB\bin folder in Windows Explorer, and drag the file FreePCB.exe onto the desktop with the RIGHT mouse button. You should be prompted with a list of options including creating a shortcut. Updates: These are updates to selected files in FreePCB (usually just the executable, FreePCB.exe). You must have previously installed a complete package, as described above. Then you can download the update, unzip it, and replace the appropriate file(s). The Combined Update includes all of the files necessary to bring the distribution to the latest recommended version. Downloads Complete Distributions: Version Contents Link 1.2 Installer FreePCB_1200_setup.exe 1.2 Self-installing archive FreePCB_1200_bin.exe 1.2 Zipped archive FreePCB_1200_bin.zip

Patch with SSSP for Linkey NEU: SSSP Unterstützung für den Linkey CCCam Newcamd Patch aktivieren: Menü Systemeinstellungen TV-Einstellung 9999 also alles beim Alten. SSSP aktivieren: Menü Systemeinstellungen erweiterte Einstellungen 8888 Testergebnisse bitte hier posten

This RF power amplifier is based on the transistor 2SC1970 and 2N4427. The output power is about 1.3W and the input driving power is 30-50mW. It will still get your RF signal quit far and I advice you to use a good 50 ohm resistor as dummy load. To tune this amplifier you can either use a power meter/wattmeter, SWR unit or you can do using a RF field meter. RF Amplifier Assembly Good grounding is very important in a RF system. I use bottom layer as Ground and I connect it with the top with wires to get a good grounding. Make sure you have some cooling at the transistor. In my case I put the 2SC1970 close to the PCB to handle the heat. With good tuning the transistor shouldn't become hot. RF Amplifier Printed Circuit Board You can download a pdf file which is the black PCB. The PCB is mirrored because the printed side side should be faced down the board during UV exposure. To the right you will find a pic showing the assembly of all components on the same board. This is how the real board should look when you are going to solder the components. It is a board made for surface mounted components, so the copper is on the top layer. I am sure you can still use hole mounted components as well. Grey area is copper and each component is draw in different colors all to make it easy to identify for you. The scale of the pdf is 1:1 and the picture at right is magnified with 4 times. Click on the pic to enlarge it. Low-Pass Filter Some of you might want to add a low-pass filter at the output. I have not added any extra low pass filter in my construction because I don't think it is needed. You can easy find several homepages about low pass filter and how to build them.

buz 11 ile yapılmış bir smps devresi

Crystal quartz oscillator circuit Another great quartz crystal oscillator schematic with bb139, a 2-nd harmonic quartz crystal and one BF214 transistor. So, the Q quartz is half of the desired transmitter frequency, L1 has 24 turns, 0.08mm Ø built on a 455kHz carcase. L2 has 8-9 turns / 0.8mm Ø / 5mm Ø. This quartz oscillator circuit has a great frequency stability, I’ve build it. Crystal quartz circuit components R1 = 10K R2 = 100

TransistorAmp BJT Transistor Amplifier Circuits Designer Software For the design of transistor amplifiers there is a new software available: TransistorAmp. With TransistorAmp you are able to create your individual transistor amplifier with a few mouse clicks. TransistorAmp is freeware.The tool TransistorAmp has a very easy to use user interface. You start every design with the menu item “New Amplifier”. In the pull-down-menu you choose your desired circuit. You can choose between, common-base-circuitcommon-emitter-circuitcommon-collector-circuit After that you get a dialog, where you have to put in all parameters of your amplifier. For the selection of the transistor type you can click on the button “Select transistor type from list”, and you will see a list of all supported transistor types. TransistorAmp supports some thousand transistor types. Select your desired transistor type there and click on OK. The selected transistor type will then be displayed in the dialog. TransistorAmp software.zip alternatif FileSwap.com : TransistorAmp software.zip download free

LM741 Entegresi ile yapılmış 0-15V / 5A Ayarlı Güç kaynağı devresi This regulated power supply can be adjusted between a few volts and 15V with P1 and with P2 adjust the upper limit ( 15.0V ). R6 value is 0.7V / Imax where Imax is the maximum current. At Imax = 5A, R6 is 0.14Ω Orijinal görüntüsünü görmek için buraya tıklayınız. T1 and T2 must have heatsinks because power losses are great at a low output voltage and a Imax equal current but you can connect the lamp L to reduce this losses. I’ve build this adjustable power supply and works great! I hope you’ll enjoy it too and have fun build this great stabilized power supply.

You can build a simple 1KHz square wave generator using a few components and the LM3909 that is useful for testing audio equipment. It is powered from a single 1.5V battery cell and the maximum amplitude of the output signal is 1.1V. With P1 you can adjust the symmetry of the square wave signal and with P2 the amplitude. Square wave generator schematic

This is a very high 1500W power amplifier circuit diagram by Rod Elliott. The circuit is built using 10 pairs of power transistor MJ15024 and MJ15025 (or MJ21193/MJ21194), then it will use 20 pieces of power transistor for final amplification. With very high power audio output, then of course it will need power supply with high power output. This amplifier require dual output power supply 130V.

Class-A Audio Amplifier Circuit With MOSFET IRF511