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Posts tagged lm386,

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 […]

PCB Layout and Design – CADint PCB

PCB Layout and Design – CADint PCB

Radio Shortwave UHF 433MHZ

Radio Shortwave UHF 433MHZ circuit

Loudspeaker Protection Circuit is really simple

Loudspeaker Protection Circuit is really simple, but the function Loudspeaker Protection Circuit is very important, because the Loudspeaker Protection will provide protection to Loudspeaker and other component. Because if the DC current flowing to the speakers must be disconnected as soon as possible. There are several issues that need to be resolved to ensure that […]

TDA1175P – LOW-NOISE TV VERTICAL DEFLECTION SYSTEM

TDA1175P – LOW-NOISE TV VERTICAL DEFLECTION SYSTEM It is intended for use in black and white and colour TV receivers. The functions incorporated are : synchronization vertical circuit, oscillator and ramp generator.  

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