power supply circuit

DC-Servo parallel connection voltage stabilization power supply circuit

Published:2011/7/5 19:20:00 Author:Christina | Keyword: DC-Servo, parallel connection, voltage stabilization, power supply circuit

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Full-automatic non-contact AC voltage stabilizer circuit

Published:2011/7/5 19:27:00 Author:Christina | Keyword: Full-automatic, non-contact, AC, voltage stabilizer

When the city electricity voltage is in the range of 150V~300V, this circuit can adjust the output voltage accurately and quickly. The circuit is as shown in the figure. The city electricity is rectified by the VD1~VD4 and then adds to the thyristor VT, the conduction angle of VT is controlled by the BT33. The relaxation oscillator is composed of the BT33, C, R1, R2, R3 and KP, you can change the oscillation cycle by changing KP. When the city electricity voltage increases, the voltage of BT33 increases too, the oscillation speed becomes faster, the conduction angle of VT decreases, the voltage of VT increases, so the voltage of L1 will not change. On the contrary, when the voltage of VT decreases, the voltage of L1 will not change too.   (View)

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+12V, ±5V output power supply circuit

Published:2011/7/5 19:59:00 Author:Christina | Keyword: +12V, ±5V, output, power supply

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CZX-18-type display power supply circuit

Published:2011/7/4 7:19:00 Author:John | Keyword: display, power supply

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Monochrome display DARAS CH-5403V-type power supply circuit

Published:2011/7/4 7:17:00 Author:John | Keyword: Monochrome display, power supply

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The 110V regulated power supply cirucit

Published:2011/6/25 5:27:00 Author:Borg | Keyword: regulated, power supply

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HT9215D-The Intergrated PC Dialing Circuit

Published:2011/6/14 23:25:00 Author:Borg | Keyword: Intergrated Circuit, PCs

The HT9215D intergrated circuit of PC dialing is widely used in all kinds of phones. It is pinned in dual in-line packages with 24 pinnings, whose pin functions and data are listed in Table 1-1. le Table 1-1 pin functions and data of HT9215D   (View)

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The adjustable polarity inverting power supply composed of MAX764

Published:2011/6/25 5:27:00 Author:Borg | Keyword: adjustable polarity, inverting power supply

1.The stable output detect point; 8.switch pipe leakage pole exit; 2.feedback terminal; 7.positive power supply; 3.turn-off mode controller; 6.positive power supply; 4.reference voltage output terminal; 7.public ground connector.   (View)

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CW137 adjustable integrated voltage stabilizer typical application circuit

Published:2011/6/27 6:42:00 Author:Christina | Keyword: adjustable, integrated, voltage stabilizer, typical application

The CW137 adjustable integrated voltage stabilizer typical application circuit is as shown in the figure. The C1 is set to prevent the self-excitation of the circuit, VD1 is the protection diode. The C2 is connected between the adjust port and the grounding port of the voltage stabilizer, the function of it is to remove the ripple bypass of RP1 to improve the ripple suppression performance of the voltage stabilizer. After you add the C2 into the circuit, if the input port or output port shorts, the reverse peak current of Q will flow to the adjustment port to damage the reference voltage and the error amplifier. CW137 adjustable integrated voltage stabilizer typical application circuit   (View)

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S-8054AKR application circuit diagram

Published:2011/6/30 13:33:00 Author:Sophia | Keyword: S-8054AKR, application circuit

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The follower circuit diagram of steady operation

Published:2011/6/30 10:45:00 Author:Sophia | Keyword: The follower, steady operation

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Pulse automatic charger 1

Published:2011/6/19 6:28:00 Author:Crystal Liu | Keyword: Pulse , automatic charger

Automatic pulse charger circuit is simple, low cost, safe and fast charging.Circuit characteristics are as follows:① Pulsed current charging the battery or dry cell, to overcome the battery memory effect ;② Charging current controled by limiting resistor R5 from the adjustment, usually can be transferred to 500mA current; ③The circuit can detects the charging voltage,when the battery voltage is close to the rated voltage,charging rate gradually slowed down,maintained at the end of the battery voltage on the dynamic; ④LED does not light a long time, to indicate charge complete.   (View)

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2CR series silicon blue-ray battery appearance circuit

Published:2011/7/4 4:14:00 Author:Christina | Keyword: 2CR series, silicon, blue-ray battery, appearance circuit

2CR series silicon blue-ray battery appearance circuit   (View)

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2CR series silicon blu-ray battery typical application circuit

Published:2011/7/4 4:05:00 Author:Christina | Keyword: 2CR series, silicon, blu-ray battery, typical application circuit

2CR series silicon blu-ray battery typical application circuit   (View)

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Tcc series silicon violet-blue battery circuit

Published:2011/7/4 4:03:00 Author:Christina | Keyword: Tcc series, silicon, violet-blue battery

Tcc series silicon violet-blue battery circuit   (View)

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2CR series rectangular silicon photocell appearance circuit

Published:2011/7/4 6:30:00 Author:Christina | Keyword: 2CR series, rectangular, silicon photocell, appearance circuit

2CR series rectangular silicon photocell appearance circuit   (View)

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2CR series rounded silicon photocell appearance circuit

Published:2011/7/4 6:29:00 Author:Christina | Keyword: 2CR series, rounded, silicon photocell, appearance circuit

2CR series rounded silicon photocell appearance circuit   (View)

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Tcc series silicon photocell appearance circuit

Published:2011/7/4 6:09:00 Author:Christina | Keyword: Tcc series, silicon photocell, appearance circuit

Tcc series silicon photocell appearance circuit   (View)

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Precision regulated DC power supply circuit diagram made by TL431

Published:2011/7/1 2:16:00 Author:Ecco | Keyword: Precision , regulated , DC power supply

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Circuit Diagram of Simplified Voltage Doubler Composed of Inverter

Published:2011/7/2 22:13:00 Author:Vicky | Keyword: Simplified Voltage Doubler

The above picture is a simplest voltage doubler composed of CMOS NOT-Gate CD4069. It is probably the most basic DC/DC booster circuit. 4069, R1 and C1 together constitute a multivibrator of about 100 KHz. The output of the oscillator changes form 0 to 10V. When the output is 0V, the capacitance C2 is charged to 10V via VD1; when the output of oscillator rises to +10V suddenly, because that the two ends of capacitance cannot mutate, end A of capacitance C2 correspondently rises to +20V. Under such circumstance, VDI1 is reverse biased, and the current charges the C3 via VD2, and therefore the output end’s voltage is +20V. However, because there is pressure drop in the diode , the actual output is a litter lower than +20V.   (View)

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