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Phone Line Controller circuit

Phone Line Controller circuit using CM8870, PIC16F84A, 4N35, BC547, 7805

boss audio amplifier

900W boss audio amplifier circuit using TIP3055, BD140, BD139, BC546, BC556

Satellite TV Receivers

Satellite TV Receivers Circuit 2.7GHz Frequency Synthesizer For Satellite TV Using TD7626F and TD7626FN Satellite TV circuit Using TD7626F and TD7626FN

USB to Serial Converter

Making USB to Serial Converter using  Tr BC557 and BC547

Audio Jammer – Noise generator for detector audio circuit

Audio Jammer – Noise generator for detector audio circuit Audio Jammer – Noise generator for detector audio circuit R1,R4 ………. 1K 0,5W R2,R3 ………. 39K 0,5W C1 …………. 5000pF/50V C2,C3 ………. 3000pF/50V FCS9012 ……. PNP FCS9012 ……. PNP

LM3915

LM3915 Audio level led indicator circuit diagram

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