Circuit Diagram

DC to DC Converter 12 Volt to 21 Volt

Published:2013/3/22 3:55:00 Author:Ecco | Keyword: DC to DC Converter, 12 Volt to 21 Volt

This 12 V to 21 V DC to DC Converter can perform nicely at 500mA maximum current. In case the current exceeds 500 milli-amperes, the voltage will drop below 21 Volt.   (View)

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Super-Clean 9VDC Power Supply Circuit

Published:2013/3/22 3:54:00 Author:Ecco | Keyword: Super-Clean, 9VDC, Power Supply

This circuit will give you a 9V regulated DC voltage at maximum current of about 1A. The circuit uses stepdown tansformer with secondary output voltage of 25V AC and 1A current. The primary voltage depended your home electrical power line installation. If your power line voltage is 110V then you must find transformer 110V primary voltage. The diode can be 4 pieces of 1N4002 (1A rectifier diode) or a 1A bridge diode.   (View)

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PWM Rectifier – power controller

Published:2013/3/22 3:52:00 Author:Ecco | Keyword: PWM Rectifier , power controller

PWM Rectifier – power controller designed for low-voltage sources. Full-wave rectifier is made on the thyristors Th1, Th2, and power in the load from 0 to 40 W resistor regulate Rvar.   (View)

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10V High-Stability Voltage Source Model

Published:2013/3/22 3:52:00 Author:Ecco | Keyword: 10V , High-Stability, Voltage Source Model

Experimental studies of exemplary scheme of a highly stable source of voltage (Fig. 1) in the temperature range from -18 ° C to 50 ° C show that the temperature error of less than ± 0.001% / ° C, temporal drift no more than ± 0.005% per day. Source has a small thermal hysteresis (Fig. 2).   (View)

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220 watts Uninterruptible Power Supply

Published:2013/3/22 3:50:00 Author:Ecco | Keyword: 220 watts , Uninterruptible Power Supply

Uninterruptible power supply provides output power to 220 watts (load current up to 1A). In the mode switch SB1 12/220 – the battery voltage is applied to a given multivibrator Q3 Q4 50 Hz, which builds up powerful keys Q1, Q6, amplified and fed to transformer T1. With the secondary winding T1 voltage of 220 V and 50 Hz filters L1 C1 C2 goes to the load.   (View)

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Voltage regulator with zero ripple

Published:2013/3/22 3:49:00 Author:Ecco | Keyword: Voltage regulator , zero ripple

This voltage regulator input need around 20 Volt to 25 Volt. The voltage regulator with zero ripple voltage regulator with zero fluctuations is the usual parametric stabilizer, but the inverting input of op amp is fed from the potentiometer 10 k of the voltage ripple. These voltages are summed in opposite phase. 10K potentiometer can be adjusted compensation ripple at the output of the stabilizer, to virtually zero.   (View)

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Stable Power Supply for High Voltage -100V to -1000V

Published:2013/3/22 3:48:00 Author:Ecco | Keyword: Stable Power Supply , High Voltage , -100V to -1000V

Stable power supply for high voltage power supply for the core of a high voltage of the PWM – Controller TL494, loaded with over 4050 followers on a pair of powerful field-effect transistors, switching the primary winding of step-up transformer (4 + 4 turns – the primary winding, 200 turns – the secondary winding). With the secondary winding through a rectifier with voltage doubling and smoothing filter RC LC voltage reaches the voltage divider, and the regulator output voltage. Scheme can be used as a voltage converter to power the photomultiplier.   (View)

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5 A Stable Car Baterry Charger

Published:2013/3/22 3:39:00 Author:Ecco | Keyword: 5 A , Stable Car Baterry Charger

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600 Watt Uninterruptible Power Supply

Published:2013/3/22 3:38:00 Author:Ecco | Keyword: 600 Watt, Uninterruptible Power Supply

The schematic in figur is the circuit of 600W UPS. Stay powered and radio during a power failure. Output frequency – 50 Hz, Power Consumption 600 Watts, the shape of the output signal – sinusoidal, the efficiency – 98%. The device contains an auto power off at the mains, followed by automatic switch-off with the appearance of tension.   (View)

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Simple 12 Volt to 9 Volt DC-DC Converter

Published:2013/3/22 3:34:00 Author:Ecco | Keyword: 12 Volt to 9 Volt, DC-DC Converter

This DC-DC Converter schematic diagram is very simple with few components, making it easy to build. It can convert 9 volt DC voltage from 12 VDC source. To obtain a much more accurate output voltage, change zener Z1 using 10V and resistor R1 with a 1 Kohm Variable resistor. A heatsink for Q1 is recommended. Very simple circuit to be able to power your 9 volt electronic equipment and some other stuff.   (View)

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200W ATX Power Supply Circuit

Published:2013/3/22 3:33:00 Author:Ecco | Keyword: 200W , ATX Power Supply

This an ATX power supply circuit diagram, dedicated for personal computer, but you may use this power supply for other electronic devices. The circuit is built using chip TL494, and will give you approximately 200W. It use push-pull transistor circuit with regulation of output voltage. Line voltage goes via input filter circuit (C1, R1, T1, C4, T5) to the bridge rectifier. When voltage is switched from 230V to 115V, then rectifier works like a doubler. Varistors Z1 and Z2 have overvoltage secure function on the line input.   (View)

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13.8V / 10A DC Regulator Circuit

Published:2013/3/22 3:32:00 Author:Ecco | Keyword: 13.8V / 10A, DC Regulator

This is a dc regulator circuit which will give output voltage of 13.8V with current output about 10A. The circuit use 4 pieces of power transistor 2N3055 to boost the electric current, to make the circuit capable to deliver 10A current output. It also use IC regulator 7812, change the IC type will give different output voltage value.   (View)

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Convert PC Power Supply to Bench Power Supply

Published:2013/3/22 3:32:00 Author:Ecco | Keyword: Convert PC Power Supply, Bench Power Supply

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ATX Power Supply Pinout

Published:2013/3/22 3:31:00 Author:Ecco | Keyword: ATX Power Supply

The ATX power supply generates three main voltage outputs that are: +3.3 V ; +5 V ; and +12 V. Low-power −12 V and +5 VSB (standby) supplies are also generated by this power supply. The −5 V output was originally needed since it was supplied on the ISA bus, however it became obsolete with the removal of the ISA bus in modern day PCs and has been removed in later versions of the standard ATX power supply.   (View)

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High-voltage power supply circuit for fluorescent light

Published:2013/3/22 3:30:00 Author:Ecco | Keyword: High-voltage , power supply , fluorescent light

The following figure shows a diagram of power fluorescent lights to a normal battery. It is very convenient when you can not use the grid.   (View)

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Transformerless power supply FET

Published:2013/3/22 3:29:00 Author:Ecco | Keyword: Transformerless power supply , FET

The circuit shows a diagram of a simple transformerless power supply for transistor BUZ41A. Through the inclusion of the common-drain transistor VT1 NW capacitor charging to a voltage of about 3 smaller than the zener voltage of VD4. An alternating voltage with a phase shift, determined by the capacity of the capacitor C1, transistor opens VT2, which stops the charge capacitor NW at the beginning of each positive half-wave supply voltage.   (View)

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Simple Variable Power Supply 1.5 – 30V, 5A

Published:2013/3/22 3:28:00 Author:Ecco | Keyword: Simple Variable Power Supply , 1.5 – 30V, 5A

The power supply is based on two chips and in addition they contain only a few discrete components. In this regard, it is easy to manufacture and configuration. At the same time, the power supply provides a high level indicators, such as the smooth adjustment of the voltage in the large range, low coefficient of fluctuation, the output current up to 5A with the ability to stabilize the current, high reliability. Also, the power supply has short circuit protection.   (View)

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Simple power supply 5V, 0.5A

Published:2013/3/22 3:27:00 Author:Ecco | Keyword: Simple power supply, 5V, 0.5A

The power supply is designed to supply a stabilized 5V various digital devices with current consumption up to 0.5 A. The transformer T1 is made on the magnetic core SHL20H32.The network contains 1650 turns of PEV-1 d = 0,1 mm, coil II – 55 turns of PEV-1 d = 0,47.In general, for the power supply can use a suitable transformer ready 7W, which provides for winding II AC 8 … 10 V at a current of 500 mA.Regulating transistor VT2 is mounted on the L-shaped dural plate 50×50 and 2 mm thick.   (View)

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Transformerless power supply from 220V with LM2575

Published:2013/3/22 3:26:00 Author:Ecco | Keyword: Transformerless, power supply, 220V

Is often requiredtosupply electricityto theconsumerlowvoltage 220V. Youcanusean externaladapter- butit’s bad,andtoreduce the size ofthe devicerequires apower supplylocatedin the device. This 5v power supply used LM2995 to the convertercircuitwhichcan be connected directly to220V. Todo this, ACconvertedto DCvoltageacross the diodebridgeVD1, andthenloweredto40V. Above 40Vwe should notuse it, due to the factthat theLM2995maximum input voltagemustnotexceed45V. Transistors T1 and T2 form a pulsating stress amplitude up to 40V, which depends on the zener diode D1. This pulsating voltage is applied to the capacitor C1, which is slightly smoothed. Next on the chip down-converter output voltage is stabilized, defined applied chips : so for LM2575-5 5V it will be equal. Schottky diode D2, L1, C2 and C3 are the standard strapping of the chip.   (View)

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Step up DC / DC Converter with LT1615

Published:2013/3/22 3:25:00 Author:Ecco | Keyword: Step up , DC / DC Converter

Interesting DC / DC converter Linear Technology has presented the company, this chip is the boost converters that allow you to get the maximum voltage in 34B with the input voltage from 1.2V to 15V. It comes in a compact package of 5 pin SOT23, while for work requiring minimal external circuitry. These chips can be used, for example, a high voltage for the LCD screen or for the varicap.   (View)

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