Class A headphone amplifier
Jumat, 20 Mei 2011 by skemarangkaian
Class A headphone amplifier
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| Class A headphone amplifier |
Tampilkan postingan dengan label Headphone. Tampilkan semua postingan
Tampilkan postingan dengan label Headphone. Tampilkan semua postingan
TDA1308T Headphone amplifier circuit
by skemarangkaian
TDA1308T Headphone amplifier circuit
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| TDA1308T Headphone amplifier circuit |
Headphone amplifier circuit
by skemarangkaian
Headphone amplifier circuit with op amp ic OPA134, 2134, NE5532, 5534.
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| Headphone amplifier circuit with op amp |
Amplifier for Paralelling Headphone
Senin, 25 April 2011 by skemarangkaian
The circuit is useful to strengthen the voice on the headphones, which is where the headphones have a stereo output is used and paralleled to some headphones. The circuit is based on the TDA2822 amplifier circuit modified to ampifier headphones.
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Amplifier for Paralelling Headphone |
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| Paralel Headphone Wiring Diagram |
Transmitter and Receiver Infra Red Headphone
Sabtu, 16 April 2011 by skemarangkaian
Transmitter and receiver circuit using infra red audio signal is applied to emit an audio signal and will received on a headphones. Making his series is not too difficult, the transmitter and receiver circuit scheme can be seen below.
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| Transmiter schematics |
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| Receiver schematics |
After the series finished, you can try to give the audio inputs on the transmitter and point the LED transmitter to the receiver. Maximum distance is a few meters may not be more than 10 meters, but you can listen to music without wires while using infra red.
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Hearing aids circuit
Kamis, 14 April 2011 by skemarangkaian
Commercially available hearing aids are expensive. Here is a cheap hearing aid circuit that uses only four transistors and some passive components. In moving the power switch S to 'on' position, the condenser microphone detects the sound signal, which is amplified by transistor T1 and T2.
Now the amplified signal through coupling capacitor C3 to the basic Transistor T3. Signal further amplified by T4 to a PNP transistor drive low impedance earphones. Capacitors C4 and C5 is the power supply decoupling capacitor. This circuit can be easily installed in small, general purpose PCB or Vero board. It operates off of DC supply of 3V. For this, You can use two small 1.5V cells. Continue to switch S to the state 'off' when circuit is not used. To increase the sensitivity of the condenser microphone, the house in a small tube. This fee circuit around Rs 65.
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