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Ericsson 788 travel type charger circuit diagram

Published:2011/4/19 8:58:00 Author:May | Keyword: Ericsson 788, travel type charger

Ericsson 788 travel type charger circuit diagram
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SPN4096A charger circuit diagram

Published:2011/4/19 8:56:00 Author:May | Keyword: charger

SPN4096A charger circuit diagram
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12V Pb acid storage battery charging circuit

Published:2011/4/19 8:54:00 Author:May | Keyword: 12V, Pb acid storage battery, charging

12V Pb acid storage battery charging circuit
It can charge to two series 12V Pb acid storage battery by this circuit. (View)

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12V seal Pb acid dual level folating charger circuit

Published:2011/4/19 8:51:00 Author:May | Keyword: 12V, seal, Pb acid, dual level, folating charger

12V seal Pb acid dual level folating charger circuit
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The self-excited multivibrator composed of CC4093

Published:2011/4/19 6:47:00 Author:Ecco | Keyword: self-excited , multivibrator

The self-excited multivibrator composed of CC4093

It needs a resistance and a capacitor connecting externally when forming a multivibrator by Schmidt trigger. The circuit is used to the low frequency vibration source which has lower demand for accuracy, and the vibration is controlled. The circuit in the figure is a self-excited much harmonic oscillator composed of four 2 input Schmidt trigger. (View)

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Electronic checking tone ware composed of CC4040

Published:2011/4/19 6:39:00 Author:Ecco | Keyword: Electronic, checking tone ware

The chart shows the electronic checking tone ware composed of CC4040. The circuit could produce 440Hz international standard A sound, it can be used as checking tone ware for band. (View)

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450 Audio signal generator

Published:2011/4/19 2:54:00 Author:Ecco | Keyword: Audio, signal , generator

450 Audio signal generator

The oscillator is the services signal source for communication user . Working principle is as shown. It consists of VTl, VT2, and other related components. VTl using transformer T to couple oscillation signal, VT2 is the common collector buffer amplifier circuit, the emitter output. T transformer with 1-4 winding and the capacitor C4 form a selecting frequency network. In order to prevent magnetic saturation of T, T is connected to the collector of VTl by the 1-2 tap, 5-6 of T is the feedback loop. Detection: The DC-bit of pin-to-ground (reference value) is as shown in the table. (View)

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3-1 count down circuit composed of CD4013

Published:2011/4/19 4:37:00 Author:Ecco | Keyword: 3-1 , count down circuit

In digital circuits, sometimes it needs pulse a divider circuit which could minus a few input pulse. The appropriate combination ofCD4013 and feedback door can achieve any pulse subtraction circuit. Figure 3-1 shows 3-1 count down circuit composed of CD4013. (View)

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24V/3A transistor voltage regulator

Published:2011/4/19 3:06:00 Author:May | Keyword: 24V/3A, transistor, voltage regulator

24V/3A transistor voltage regulator
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Full bridge circuit diagram

Published:2011/4/19 2:12:00 Author:May | Keyword: Full bridge

Full bridge circuit diagram
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24V DC 220V AC 100W push pull chopper

Published:2011/4/19 3:16:00 Author:May | Keyword: 24V DC, 220V AC, 100W, push pull, chopper

24V DC power supply (such as storage battery) can offer power to this circuit. Controlled by chopper, it can output 220V, 50Hz AC. The main technical data of this circuit:work voltage: 24V (the maximum is 30V)no-load current: 1.15Aoutput voltage: 220V, 50Hzoutput power: 100Wefficiency: 74%The data of transformer:n1=n2=9 turns, 0.42 copper enamelled wiren3=n4=81 turns, 1.2mm copper enamelled wiren5=875 turns, 0.42 copper enamelled wire (View)

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120V/25mA DC voltage converter

Published:2011/4/19 3:31:00 Author:May | Keyword: 120V/25mA, DC voltage converter

This circuit is formed according to the principle of positive breakover convertor. That is to output power to load when the transistor is breaking over. We add diode D1 in its loop for the purpose of overtop base-emitter voltage on transistor. Start-oscillation button connected betweent resistor R1 and R2 is assisted start device. Meanwhile it can prevent the add of base current when load current is increasing. So this circuit has the function of short circuit protection.The data of transformer:winding n1=40 turns, 0.32 copper enamelled wiren2=12 turns, 0.15 copper enamelled wiren3=420 turns, 0.1mm copper enamelled wire (View)

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