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Posts tagged tube amp

50W Stereo Audio Amplifier circuit

50W Stereo Audio Amplifier circuit using STA505

Electronic Breaker Collection

Electronic Circuit Breaker Collection Electronic Breaker Collection Collection of “Electronic and Electric Engineering” This is part of the lesson and practice of Electric and electronics. And most people expect to have the expertise and experience in the field theory of this technology. This collection has been designed … in 1980, until now, it’s all there […]

Antenna Switch Circuit

Antenna Switch Circuit Diagram using LM3914 Just tune in a station and then switch the AGC switch on and off

what is power supply ?

what is power supply ? what is power supply ? This article is about the common off-line switching power supplies used Preamplifiers what is power supply ? +15 and -15 , GND what is power supply ? One unit of Preamplifiers has begun working, while the second one will be operational The power supply +15 […]

Circuit diagram 75 Meter QRP SSB Transceiver

The 75 Meter QRP SSB Transceiver Theory of Operation 6-30-03 In general, the transceiver switches the 4-element 1500 ohm xtal BPF ends between the inputs and outputs of the two SA602s to reverse the signal flow for R/T operation. Since no IF amplifier is used in the design, 20 dB of additional receiver gain is […]

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