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Archives for September, 2010

Battery Charger Circuit Diagram with Piezo Ttransducer

Battery Charger Circuit Diagram using LM393, 4011B, 7806, 1N4001, BD140

Broadband peak detector circuit

Broadband peak detector circuit using LM393

Audio amplifier circuit board

Audio amplifier circuit board Audio amplifier circuit board using KA2221 Audio amplifier circuit board Samsung Audio amplifier circuit board DUAL LOW NOISE EQUALIZER AMPLIFIER The KA2221 is a monolithic integrated circuit consisting of 2-channel low noise amplifiers and regulated power supply for car stereos. FEATURES suitable for car stereos. Low noise amplifier. Voltage regulator included. […]

Power Inverter circuit

25W Power Inverter

80 Metre Direct Conversion Receiver

80 Metre Direct Conversion Receiver using MPF102, LM386, BC548

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