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PRE AMP MIC

PRE AMP MIC 3 TR USING BC550C BC556 BC546 PRE AMP MIC 3 TR USING BC550C BC556 BC546 R1_____________ 1K5 R2_____________ 220K R3_____________ 18K R4_____________ 330R R5_____________ 39K R6_____________ 56R R7,R10_________ 10K R8_____________ 33K R9_____________ 150R R11____________ 6K8 R12,R13________ 100R R14____________ 100K C1_____________ 220nF 63V C2_____________ 220pF 63V C3_____________ 1nF 63V C4,C7__________ 47µF 50V C5,C6__________ […]

Spectrum Analyzer

3 Channel Spectrum Analyzer using LM3900, AN6884 3 Channel Spectrum Analyzer using LM3900, AN6884 Parts: R1 100K 1/4W Resistor R2 820K 1/4W Resistor R3, R14, R16, R18 2.2 Meg 1/4W Resistor R4, R5, R6 22K Pot R7, R8, R9, R25, R27, R29 10K 1/4W Resistor R10, R11, R12 680 Ohm 1/4W Resistor R13. R15, R17 […]

Making best mic preamp

Making best mic preamp 3 TR using C644, C828 Making Preamp Mic 3 TR using C644, C828

Dancing LEDs pcb diagram

Dancing LEDs pcb diagram using 4017, 555

NiMH Cell Battery Tester circuit

NiMH Cell Battery monitoring circuit NiMH Cell Battery Tester circuit using TLC555, 2222, ZXM61N02P

Audio level meter

audio vu meter Audio level meter using BC107 Audio level meter using BC107

Electronic circuit diagram audio amplifier AN7149N 5w

Electronic circuit diagram audio amplifier AN7149N 5w

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