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0-30 vdc stabılızed power supply wıth current control 0.002-3 a

02/06/11 Bulsatcom 39°E [Key02[04] Active - (Fausto Emulator/Ipnosys EMU and others Not Underworld) - thx MEMEDİM 11/05/11*AJA Contribution 36°E Biss - thx marokino08 07/05/11 1 Auto (aka Pershiy Avtomobilniy) 4.8°E P/T Biss Key (Events Only, eg F1) - thx dimaxa213 05/05/11 RAI 13°E Key0C [Active, June2011] (for Diablo use RAI card or Fausto Emulator) - thx Verdeoro 03/05/11 Telespazio Hungary 4°W Key0C [Active, June2011] (for Diablo use Telespazio Hungary card or Fausto Emulator) - thx dimaxa213 21/04/11*Libya Satellite Channel 8°W Biss - thx marokino08 17/04/11 Monitor Games 13°E Biss - thx ManSour NeghiMish 17/04/11 Opap TV 13°E Biss - thx 2010dz 14/04/11 CNN Turkey 42°E Biss - thx Informed® 14/04/11 Cartoon Net Arabic 13°E Biss - thx 2010dz Constant Control Words: Turn Fixed CW [ON] also in most cases turn Auto PMT [OFF] Unless Control Word CAID not in CAID file - None at Presant.

Hız Sabitleme Sistemi (Cruise Control) ve Ayarlanabilir Hız Sabitleme Sistemi(ACC)

Orijinal görüntüsünü görmek için buraya tıklayın. 677x429 px. stereo ton elektronik kontrol devresi HTML Kodu: http://www.uydudoktoru.com/dosyalar/elektronik/Devreler/Karma_Devreler/Stereo-tone-control-circuit-using-IC-TDA1524A2.jpg http://www.uydudoktoru.com/dosyalar/elektronik/Devreler/Karma_Devreler/TDA1524A.gif

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

This is circuit 13.8V, 40A Switching Power Supply,It is high current power supply switching regulator.And Nice Circuit for power user. This article was originally published (in a slightly modified form) in the QST magazine, December 1998 and January 1999, and in the Radio Amateur's Handbook, 1999. Visit the American Radio Relay League for information on these publications, and a world of ham radio related things! Design decisions There are several different topologies for switchers in common use, and the first decision a designer must take is which of them to consider. Among the factors affecting the decision are the power level, the number of outputs needed, the range of input voltage to be accepted, the desired tradeoff between complexity, quality and cost, and many more. For this power supply I decided to use the half bridge forward converter design. This topology connects the power transformer to a bridge formed by two power transistors and two capacitors. It is reasonably simple, puts relatively low stress on the power transistors, and makes efficient use of the transformer's magnetic capabilities.The second basic decision is which switching frequency to use. The present trend is to use ever higher frequencies. But by doing so it becomes more difficult to filter out the RF noise inevitably generated by the switching. So I decided to stay at a low switching frequency of only 25 kHz for the full cycle, which due to the frequency doubling effect of the rectifiers results in 50 kHz on the output filter. For the main switching elements, bipolar transistors or MOSFETs can be used. Bipolars have lower conduction losses, while MOSFETs switch faster. As in this design I wanted to keep the RF noise at an absolute minimum, very fast switching was not desired, so I used bipolar transistors. But these tend to become too slow if the driving is heavier than necessary. So, if the transistors have to switch at varying current levels, the drive to them must also be varied. This is called proportional driving, and is used in this project. The half bridge converter is best controlled by pulse width modulation. There are several ICs available for this exact purpose. I chose the 3524, which is very simple to use and easy to find. Any 3524 will do the job. It can be an LM3524, SG3524, etc. This basically ends the big decisions. From now on, designing the circuit is a matter of calculating proper values for everything.

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

Switching regu*lators are available is different circuit configurations in*cluding the flyback, feed-forward, push-pull, and non-iso*lated single-ended or single-polarity types. Also, the switching regulators can operate in any of three modes – step-down, step-up, or polarity inverting. LM 2575 series of regulators developed by National Semiconductor are monolithic IC’s that provide the active functions for step-down (back) switching regulator, capable of driving a1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator. LM 2575 series offers a high-efficiency replacement for popular 3-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required. Fixed output voltage version is illustrated in figure. The National Semiconductor LM 1577/LM 2577 are monolithic ICs that provide all of the power and control functions for step-up (boost), fly back, and forward converter switching regulators. The device is available in three different output voltage versions: 12 V, 15 V and adjustable.