Posted on Wednesday, November 17, 2010 • Category:
Amplifiers
This is old circuit Power amp OCL, But easy circuit and very nice. To use for play music in your home. It low cost too. It use IC 741 or LF351(good) and Transistor x 4 (2N3055+MJ2955+BD139+BD140) and little component. Power supply volt +35V/-35V and 3A for Mono, 5A for Stereo.
Posted on Wednesday, November 17, 2010 • Category:
Amplifiers
PCB Tone control adjustable bass-treble Stereo by IC LM348
Posted on Wednesday, November 17, 2010 • Category:
Amplifiers
This is a small protection circuit from loudspeakers, from DC voltage that likely to exist after some damage in the power amplifier. If a DC voltage is presented in the exit of amplifier, RL1 it interrupts immediately the line of loudspeakers preventing thus to reach in he. Parallel it provides a delay time of 3 seconds from the moment where the power supply will be applied. This delay protects the loudspeakers from undesirable bangs that are observed when open the supply switch.
Posted on Wednesday, November 17, 2010 • Category:
Amplifiers
Circuit of TDA2030 amp OTL 15W
Posted on Wednesday, November 17, 2010 • Category:
Amplifiers
This is circuit Car audio Amplifier(Bridge Amplifier BCL) , It use IC HA1377, Supply Volt 12V-13V. Speaker 4 OHM. Nice Circuit and Easy to Build.
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