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Amplifier ic 18W using HA13118

By admin | Published August 28, 2011

Amplifier ic 18W using HA13118

IC amplifier 18 watt circuit is an IC number HA13118 Hitachi Hard. That the IC will be integrated amplifiers, class AB. And this cycle is to use a bridge circuit. As a result, growth rates up to 55 dB. And pressure from 8-18 volt the current 1-2 amps, with less than 0.2% distortion at 1W. And response. frequencies from 30 Hz-30 kHz….
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Posted in amplifier | Tagged IC amplifier stereo | 196 Comments

Fuse electronic for ic regulator

By admin | Published August 28, 2011

Fuse electronic for ic regulator

Power supply, plus the ground, using current up to 1 Amp.Normally used, IC Regulator no. 78XX. When used to power circuits.And the short circuit that occurred.If no fuse various equipment will be damaged.But if there is an electronic fuse circuit for IC number 78XX.Then when the, short-circuit.This circuit will act to stop paying current and voltage immediately.Thus preventing the loss….

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Posted in electronic control, power supply | 96 Comments

Fuse electronic for ic regulator

By admin | Published August 26, 2011

Fuse electronic for ic regulator

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Posted in electronic control, meter, power supply | 264 Comments

Stereo surround with ic lm1458

By admin | Published August 26, 2011

Stereo surround with ic lm1458

Integrated stereo surround sound will come out similar to the Concert Hall. And a simple circuit. Using the LM1458 IC number to expand the difference of the input signal left (L). It came out as surround sound sure enough.
When raising the power and enter the left and right input circuit.The signal on the left (L) to signal coupling through C2 and R1 to enter the pin 5 of IC1 / 1.And signs on the right (R) to signal coupling through R4 to C2 and to the pin 3 of IC1 / 2. Then the amplifier IC1 is the difference. Which the same signal is lost.Balance, but only signals different from the output pin 7 and pin 1.The VR1 / 1 and VR1 / 2 is a control gain of the signal on each side….

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Posted in amplifier | Tagged Stereo surround | 80 Comments

Power supply is turned off automatically

By admin | Published August 26, 2011

Power supply is turned off automatically

Eporyeyornt Supply This power supply is not as common, is not to load when it refused to supply power. And will close itself when the output shock or short circuit.
Principles (assuming that the load).When the power house through a T1 will converts 12-volt power through the rest of D1-D4,To convert a DC voltage. Then filtered through a C1 to flow more smooth.Before entering a leg to stand IC1.Where, as a DC regutator IC at pin 3 of 5 volts.Forward power to D6. [...]

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Posted in electronic control, power supply | Tagged Automatic power supply | 241 Comments

Burglar alarm systems

By admin | Published August 19, 2011

Burglar alarm systems

This is the bad economy, we will find ways to better protect against identity theft, I recommend this circuit to help you. Burglar alarm systems Fridge door Alarm Beeps if you leave open the door over 20 seconds 3V battery operation, simple circuitry This circuit, enclosed into a small box, is placed in the fridge [...]

Posted in alarm | 303 Comments