Build a Single cell Charger Circuit Diagram

This Single cell Charger Circuit Diagram detects a full-charge state and automatically switches to a float condition —from 240 mA to 12 mA. The circuit uses the 555 timer.

 Build a Single cell Charger Circuit Diagram

 

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CAPACITANCE METER ELECTRONIC DIAGRAM

The Capacitance Meter Circuit, However, when finished, you will have an instrument capable of measuring all but the largest capacitors used in radio circuits. Unlike variable resistors, most variable capacitors are not marked with their values. As well, the markings of capacitors from salvaged equipment often rub off.

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1W BTL Audio Amplifier Circuit Diagram

The TDA8581(T) from Philips Semiconductors is a 1-watt Bridge Tied Load (BTL) audio power amplifier capable of delivering 1 watt output power into an 8-Wload at THD (total harmonic distortion) of 10% and using a 5V power supply.

The schematic shown here combines the functional diagram of the TDA8551 with its typical application circuit. The gain of the amplifier can be set by the digital volume control input. At the highest volume setting, the gain is 20 dB. Using the MODE pin the device can be switched to one of three modes: standby (MODE level between Vp and Vp–0.5 V), muted (MODE level between 1 V and Vp–1.4 V) or normal (MODE level less than 0.5 V). The TDA8551 is protected by an internal thermal shutdown protection mechanism. The total voltage loss for both MOS transistors in the complementary output stage is less than 1 V.

Circuit diagram:

1 Watt BTL Audio Amplifier Circuit Diagram

Using a 5-V supply and an 8-W loudspeaker, an output power of 1 watt can be delivered. The volume control has an attenuation range of between 0 dB and 80 dB in 64 steps set by the 3-state level at the UP/DOWN pin: floating: volume remains unchanged; negative pulses: decrease volume; positive pulses: increase volume Each pulse at he Up/DOWN pin causes a change in gain of 80/64 = 1.25 dB (typical value).

When the supply voltage is first connected, the attenuator is set to 40 dB (low volume), so the gain of the total amplifier is then –20 dB. Some positive pulses have to be applied to the UP/DOWN pin to achieve listening volume. The graph shows the THD as a function of output power. The maximum quiescent current consumption of the amplifier is specified at 10 mA, to which should be added the current resulting from the output offset voltage divided by the load impedance.

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SAFELY DISCHARGE X CAPACITORS ELECTRONIC DIAGRAM

SAFELY DISCHARGE X CAPACITORS ELECTRONIC DIAGRAM

When the AC voltage is disconnected, CAPZero automatically and safely discharges the X capacitor by closing the circuit through the bleed resistors and directing the energy away from the exposed AC plug. This approach provides engineers with total flexibility in their choice of the X capacitor used to optimize differential- mode EMI filtering without worrying about the effect of the required bleed resistors on system no-load and standby power budget. The innovative design inherently meets international safety standards for all open and short-circuit fault tests, allowing CAPZero to be used before or after the system input fuse. CAPZero is suitable for all AC-DC converters with X capacitors that require very low standby power. It’s offered with 825- or 1,000-V MOSFETs to support a variety of power supply design needs. It is ideal for a wide range of applications, including PCs, servers/workstations, monitors and TVs, printers and notebooks, and appliances requiring EuP Lot 6 compliance and adapters requiring ultra-low no-load consumption. CAPZero devices are available now in an SO-8 package at $0.40 each for 10,000- piece quantities. [www.powerint.com]

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5V DC REGULATED PHONE CHARGER ELECTRONIC DIAGRAM

5V DC REGULATED PHONE CHARGER ELECTRONIC DIAGRAM

Regulated phone charger which is used as an emergency charger for mobile phones with source from ordinary batteries, and works with 1.5V input DC voltage. At 5V, it can provide output to 70mA. If the current is drawn, the voltage will be drop. A006 microcontroller is used to create square wave which used to drive the Field Effect Transistor BBV93.

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2005 Gmc 1500 Series Wiring Diagram

2005 Gmc 1500 Series Wiring Diagram

The Part of 2005 Gmc 1500 Series Wiring Diagram: power distribution, fuse block, blower motor
switch, battery, junction block, solenoid ctrl, ctrl module, oil blower motor ctrl, resistor assembly, coolant bypass solenoid ctrl, ignition voltage

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Fuse Box BMW Z3 Plug in 1996 Diagram

Fuse Box BMW Z3 Plug in 1996 Diagram - Here are new post for Fuse Box BMW Z3 Plug in 1996 Diagram.

Fuse Box BMW Z3 Plug in 1996 Diagram

Fuse Panel Layout Diagram Parts: high beam light relay, fuel pump relay, crash control module, auxiliary fuse box.

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12V to 30V DC to DC Converter circuit Diagram

 12V to +/- 30V DC to DC Converter circuit Diagram

This is a DC to DC converter for car power amplifier. 12V input generates +30V and -30V output for preamp or power amplifiers. Circuit uses SG3525 IC, Mosfets and switching power supply.

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