To be aware that there are no short-circuit output, so that when the speaker short, while the amplifier is working (with signal), there is a very real danger that may damage the transistor.
Characteristic of the 75W Transistor Audio Amplifier are as follows …
Sensitivity to 74 Watts output power – a little less than 1W (1W is 75W)
Gain – 27 dB
Frequency range (-3dB) – 10Hz to 23kHz @ 1W
THD, 1 kHz – 0.05% (typical maximum)
Open loop gain – 125dB (no load), 80dB (8 Ohm load)
Input Impedance – 22k ohms
DC-Offset – less than 100 mV (<20 mV typical **)
Noise – <2 mV at the output (-80dB unweighted ref 50W)
This 75W Power Amplifier requires a power supply + /-35V (open circuit voltage), yan will give 70W into 8 ohms with ease.
Class-D Power Audio Amplifier Using MD7120 MOSFET Driver This is the circuit design of Class-D…
This is the circuit diagram of active antenna amplifier for FM radio device. With only…
This is the schematic design of 400 Watt 70 Volt amplifier capable to deliver about…
This is the circuit diagram of 150W power amplifier which built using power transistors. The…
This is the circuit design of 1000W stereo audio amplifier. It is a very good…
This is the circuit design of 150W car audio amplifier. The circuit is divided in…