Control sound automatic by BC109

Saturday, January 24th, 2009

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This circuit is the sound controls automatic circuit, by it will fix to don’t give popularity level in the sound doesn’t expire. When feed sound signal reaches in this circuit , as a result , will have a signal, will the power goes up to flow through LED shine to LDR. The connection and [...]

Tone Generator Control with light using IC 555

Tuesday, January 20th, 2009

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This the Tone Generator circuit that interesting because of can control the sound has with the light. By use the integrated circuit NE555 be pillar equipment , which perform produce sound frequency in model Astable Multi vibrator or pulse generator. And use 25 ohm small-sized loudspeakers. For the equipment detects [...]

Light to Sound Wave Receiver using IC 741

Sunday, December 21st, 2008

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This be Light Wave Receiver circuit , perform take sound signal from the light by modify from the light into pieces hear at a loudspeaker. By the circuit uses LM741 , be IC op-amp the multi-purpose IC. It use for enlarge sound signal , change the way Photo transistor into pieces give [...]