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Archives for May, 2013

Booster Antenna

Booster Antenna Circuit Antennas that are much shorter than 1/4 wavelength present a very small and highly relative impedance that is dependent on the received frequency. It is difficult to match impedances over a decade of frequency coverage. Instead, input stage Q1 is an FET source-follower. A high-impedance input successfully bridges antenna characteristics at any […]

150w amp circuit

OCL 150W amp circuit using TIP 32, TIP 31, D438, A564,  MJ2955, 2N3055 guitar amplifier circuit diagram, audio amplifier circuit diagram, differential amplifier circuit diagram, amplifier circuit diagram, guitar amp circuit diagram, op amp circuit diagram  TIP 32 TIP 31 D438 A564 MJ2955 2N3055  

Rain Water Sensor Circuit

Rain Water Sensor Circuit Rain Water Sensor Circuit using NE555 and TUP2SB178

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. […]

Simple Echo Circuit

Simple Echo Circuit Microphone echo circuit diagram using PT2399 Audio mic Reverb layout

Audio circuit

150W Audio circuit diagram 150W Audio circuit diagram

Remote Control Circuit Breaker using 2SA104, 2SB187, 2SB22

Remote Control Circuit Breaker using 2SA104, 2SB187, 2SB22 Radio Control 2 using 2SA104, 2SB187, 2SB22 Radio Control 2 using 2SA104, 2SB187, 2SB22

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