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Posts tagged Circuit diagram of SWEEPING TONE ALARM BEEPER

Sweeping Tone Alarm Beeper

Sweeping Tone Alarm Beeper using 4069, TIP29C, NECD882

micro transmitter fm

micro transmissor fm circuit using bf49402 Simple 30 meters range FM transmitter using bf49402 BAT      3 – 6 volts C1     47nF C2     4,7pF C3     100nF CV1     3pF – 30pF T1     bf494 R1     2k7 R2     8k2 R3     5k6 R4     47

quad system circuit

quad system circuit using LM324, Lm324A, LM224, LM2902, LM2902V, NCV2902 Single Supply Quad Operational Amplifiers using LM324, Lm324A, LM224, LM2902, LM2902V, NCV2902 The LM324 series are low-cost, quad operational amplifiers with true differential inputs. They have several distinct advanteges over standard operational amplifier types in single supply applications. The quad amplifier can operate at supply […]

Audio amplifying

Audio amplifying circuit using KA2214

Portable Mic Pre-amp 2 transistor

Portable Mic Pre-amp 2 transistor using BC549C, BC547B

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