Circuit Diagram

Foot blood flowing magnetic buck shoes

Published:2011/4/18 20:07:00 Author:Ecco | Keyword: Foot blood flowing, magnetic , buck shoes

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Reliable (15W) switching power supply making circuit diagram

Published:2011/4/20 3:00:00 Author:May | Keyword: 15W, switching power supply

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Power output stage diagram circuit of switching power supply

Published:2011/4/20 1:21:00 Author:May | Keyword: Power output stage, switching power supply

Power output stage diagram circuit of switching power supply (50KHz-120KHz 1KW-2KW)   (View)

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TDA8132 typical application circuit (switching regualted power supply)

Published:2011/4/20 6:25:00 Author:May | Keyword: typical application, switching regualted power supply

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TDA8130 typical application circuit (switching regualted power supply)

Published:2011/4/20 6:25:00 Author:May | Keyword: typical application, switching regualted power supply

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STR6309 power supply

Published:2011/4/20 6:23:00 Author:May | Keyword: power supply

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SONY KV2185 power supply

Published:2011/4/20 6:22:00 Author:May | Keyword: power supply

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SONY KV2184 power supply

Published:2011/4/20 6:22:00 Author:May | Keyword: power supply

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SONY G3F-K power supply 2

Published:2011/4/20 6:21:00 Author:May | Keyword: power supply

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SONY G3F-K power supply 1

Published:2011/4/20 6:20:00 Author:May | Keyword: power supply

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Shengguang 15W electron ballast circuit

Published:2011/4/20 6:28:00 Author:May | Keyword: Shengguang, 15W, electron ballast

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Duplex tube electron ballast circuit

Published:2011/4/20 6:29:00 Author:May | Keyword: Duplex tube, electron ballast

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One kind of electron ballast circuit principle diagram

Published:2011/4/20 6:30:00 Author:May | Keyword: electron ballast

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20W fluorescent light electron ballast using MJE13005×2

Published:2011/4/20 6:32:00 Author:May | Keyword: 20W, fluorescent light, electron ballast

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Automatic opening/closing circuit (Rph is photoresistance)

Published:2011/4/20 6:34:00 Author:May | Keyword: Automatic opening/closing, Rph, photoresistance

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Simpleset standard Li-ion battery charger

Published:2011/4/20 6:34:00 Author:May | Keyword: Li-ion battery charger

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Automatic plumbic acid charging circuit diagram

Published:2011/4/20 6:36:00 Author:May | Keyword: Automatic, plumbic acid, charging

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Two-way output normal shock type 150W precision switch stabilized voltage supply

Published:2011/4/20 5:07:00 Author:May | Keyword: Two-way output, normal shock type, 150W, precision switch, stabilized voltage supply

+5V, +12V two-way output normal shock type 150W precision switch stabilized voltage supply is shown in the diagram. This power supply uses one pieces of TOP227Y(IC1), linearity optical couple CNY17-2 (IC2, the production of Germany Telefunken company) , adjustable precision parallel regulator TL431 (IC3). AC input voltage is 110V/220V. When it is low voltage input, power supply's efficiency can reach 77% (typical value). S is power supply choosing switch. When S is closed, it is choosing AC voltage IIOV voltage doubling rectifying circuit. Its working principle is shown in the following diagram. Supposing the positive half period a point of AC is positive potential, b point is negative potential, at this time, the diode VDb and VDd on rectifier bridges is breaking over, VDa an VDd is cutting off, shown in diagram (a). 110V AC can charge to C1 according to the following ways: u→a→C1→VDc→b, it can charge Uc1 to about ×llOV=155V, its polarity is that up end is positive and down end is negative. When in negative half period, b point is positive potential, a point is changing to negative potential, the equivalent circuit is shown in diagram (b). At this time, VDa, VDd is breaking over, VDb, VDc is cutting off, the current can charge to C10 according to following ways: u→b→VDa→C10→a, it can make Uc10≈115V, and the polarity is also that up end is positive and down end is negative.   (View)

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Small size middle power switching powr supply (10W-60W circuit diagram)

Published:2011/4/20 3:43:00 Author:May | Keyword: Small size, middle power, switching powr supply, 10W-60W

Small size middle power switching powr supply (10W-60W circuit diagram)---amplifying circuit diagram   (View)

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Push pull circuit using complementary transistor and CMOS driving stage

Published:2011/4/19 22:38:00 Author:May | Keyword: Push pull, complementary transistor, CMOS driving stage

It is using CMOS inverter 4049 as driving stage of inverter stage of TDA4700 's output signal and transistor T1, T2. Three inverters are parallel. Two output ends among them are separately adding to the base of two transistors in push pull circuit. Resistor R2 is used for controlling the circuit. When it can not guarantee enough voltage for SIPMOS tube's gate pole to offer a fixed potential, it can prevent the error breaking over of this tube. Capacitor C3 is used for shorting time constant R2CBE. Here, CBE is capacitor between base-emitter of transistor T.   (View)

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