The basic UPS power supply principle circuit

Published:2011/6/21 6:26:00 Author:qqtang | Keyword: UPS, power supply

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The single terminal flyback switch power supply circuit

Published:2011/6/21 6:58:00 Author:qqtang | Keyword: single terminal, flyback switch

The single terminal flyback switch power supply application circuit is shown in figure 3. The so-called single term means the magnet circuit side of the core in the high-frequency transformer. The so-called flyback means when the switch VT1 is conducting, the inductive voltage of primary coil in the high frequency transformer T is positive in the upper part by passive in the lower part, the rectifier diode VD1 is blocked and save power in the primary coil. When the switch pipe VT1 is blocked, the power stored by the primary coil is delivered to the load after it has been past the coil, rectified by VD1 and filtered by capacitor C.   (View)

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The simple but special regulated circuit

Published:2011/6/21 2:14:00 Author:Seven | Keyword: regulated circuit

The simple but special regulated circuit: In some conditions, if there needs a regulated circuit while it is running with load, as the control and detector, this circuit will seem brief and convenient. By adjusting the ratio of R1 and R2, the input voltage of the regulated module can be changed, the value of C1 is relative to the loading. A. If the single way thyristor is switched in to dual way thyristor, the circuit will be simpler.   (View)

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The 9V battery strainmeter signal adjusting circuit

Published:2011/6/20 22:21:00 Author:Seven | Keyword: 9V battery, strainmeter signal

The 9V battery strainmeter signal adjusting circuit is shown as above.Notes: this is a 9V battery strainmeter signal adjusting circuit, the sampling circuit offers the low average working current of 650μA. As ΔV/ΔT jumps in a high order, the RC net composed of 4.7KΩ and 0.01μF is used to protect the reaction bridge, which avoids the long-term drifting.   (View)

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circuit of transistor and current foldback

Published:2011/6/14 9:31:00 Author:chopper | Keyword: transistor, current foldback

The following picture is the current foldback circuit.When the voltage drop on R is over 0.6V,VT2 will be conducted and VT1 will close to cut off the output current.In this case,the current of VT1 is limited at 6A.   (View)

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STR-S6309 switching power supply thick film integrated circuit

Published:2011/6/15 7:33:00 Author:chopper | Keyword: switching power supply, thick film

STRS6309 is a mixed type switching power supply thick film integrated circu   (View)

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heat conduction prevention circuit

Published:2011/6/11 21:13:00 Author:chopper | Keyword: heat conduction, prevention

The collocation method is as follows.   (View)

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The DEMO-80110NE circuit

Published:2011/6/19 20:50:00 Author:qqtang | Keyword: circuit

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The DEMO-80110NE module pin circuit

Published:2011/6/19 20:49:00 Author:qqtang | Keyword: module pin circuit

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The relay circuit modified from electric fans

Published:2011/6/19 20:49:00 Author:qqtang | Keyword: relay circuit, electric fans

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The portable high-speed light pulse generating circuit

Published:2011/6/19 21:42:00 Author:qqtang | Keyword: high-speed, light pulse

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The auto charging motor circuit

Published:2011/6/19 21:45:00 Author:qqtang | Keyword: charging motor

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The principle diagram of the bus non-contact IC reader/writer circuit

Published:2011/6/19 21:48:00 Author:qqtang | Keyword: principle diagram, non-contact IC

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The regulated micro switch power supply circuit

Published:2011/6/19 3:49:00 Author:Seven | Keyword: switch power supply

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The micro intermediate power switch power supply circuit

Published:2011/6/19 7:44:00 Author:Seven | Keyword: intermediate power, power supply

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The simplest standard Li-ion battery charger circuit

Published:2011/6/19 8:07:00 Author:Seven | Keyword: battery charger

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Jin Niu charger circuit

Published:2011/6/19 7:25:00 Author:Seven | Keyword: charger, Jin Niu

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The simple and practical Lithium charger circuit

Published:2011/6/19 8:22:00 Author:Seven | Keyword: Lithium charger

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MIC5158--the battery charger circuit

Published:2011/6/19 1:17:00 Author:Seven | Keyword: battery charger

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The op-amp feedback serial connection voltage stable circuit

Published:2011/6/19 1:26:00 Author:Seven | Keyword: op-amp feedback, serial connection

In the figure is the serial connection voltage stable circuit composed of op-amps, which consists of the reference voltage, comparing amplifier, control tube and sampling circuit, 4 parts in total. Voltage stabilizing process: Voltage stabilizing range:Therefore, the output voltage of the steady circuit ranges depending on R1/R2.   (View)

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