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Posts tagged IF

3V FM AM TUNER SYSTEM

3V FM IF AM TUNER SYSTEM using KA2248 3V FM IF AM TUNER SYSTEM The KA2248 is a monolithic integrated circuit developed the for headphone stereo. FUNCTIONS AM SECTION: Converter, IF amplifier, Detector, Tuning indicator FM SECTION:  IF amplfier, Quadrature detector, Tuning indicator FEATURES Low quiescent current: AM: Iccq= 3mA, Vcc= 3V FM: Iccq= 8mA, […]

SCR circuit

SCR circuit for Time Switch R1 ………….. 15K ohm R2 ………….. 600 ohm R3 ………….. 4,7K ohm R4 ………….. 22K ohm R5 ………….. 68 ohm C1 ………….. X C2 ………….. 47uF – 25V C3 ………….. 0,1uF – 600V TR1-TR2 ……… 2N5306 SCR …………. 2N4444 PS ………….. Puas Switch D1 ………….. 1N – 4003

1w Audio power amplifier schematics

1w Audio power amplifier schematics using AN7112 Mini audio power amplifier for portable radio provides access to AM and FM radio

Automatic Time Out with On Off Circuit

Automatic Time Out with On Off Circuit using 74HCT74, 4013

Electronic circuit diagram audio amplifier AN7139 20w

Electronic circuit diagram audio amplifier AN7139 20w

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