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Posts tagged Low noise transistors for electret mic

Portable Mic Pre-amp 2 transistor

Portable Mic Pre-amp 2 transistor using BC549C, BC547B

60W Guitar Amplifier circuit diagram using MJ11015 MJ11016

60W Guitar Amplifier circuit diagram using MJ11015 MJ11016 Amplifier parts: R1 6K8 1W R2,R4 470R 1/4W R3 2K 1/2W Trimmer Cermet R5,R6 4K7 1/2W R7 220R 1/2W R8 2K2 1/2W R9 50K 1/2W Trimmer Cermet R10 68K 1/4W R11,R12 R47 4W C1,C2,C4,C5 47µF 63V C3 100µF 25V C6 33pF 63V C7 1000µF 50V C8 2200µF […]

Electric Guitar

Electric Guitar Electric Guitar circuit board using bass, mid, treble

Circuit diagram SSB TRANSCEIVER 80M / 40M

Units units include: 1. Exciter section working on the frequency of 3250 Kc s / d 3450 Kc. 2. RF section Oscilator Crystal Unit worked on Frekwnsi In the 80 M Ayala Oscilator Kristal is 7200 Kc In the 40 M Ayala Oscilator Kristal is 10,400 Kc 3. RF PA section I make this transceiver […]

Reader circuit

Simple Magnetic stripe reader circuit using CVBC337, BD139 Simple Magnetic stripe reader circuit using CVBC337, BD139 R1 68K 1/4W Resistor C1 4n7 630V Ceramic or Polyester Capacitor C2 60-80pF 63V Ceramic Trimmer C3 100F 25V Electrolytic Capacitor Q1 BC337 45V 800mA NPN Transistor Q2 BD139 80V 1.5A NPN Transistor L1 500 turns on a 10mm. […]

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