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Posts tagged SA602s,

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 […]

1.5v DC to AC inverter circuit for lamp using SP4425

1.5v DC to AC inverter circuit for lamp using SP4425

STK457 Power Amplifier Circuit

STK457 Power Amplifier Circuit STK457 Power Amplifier Circuit STK457 Power Amplifier Circuit

High Power Audio Amplifier Layout Diagram

High Power Audio Amplifier Layout Diagram USING C5198, A1941, 3055, 2955, TIP31, TIP32, C945

Block diagram of a basic synthesiser

Here is the block diagram of a basic synthesiser. The “R-counter” generates the reference frequency. In the MC145152-2 you have about 3 different options. In mine you will have over 2000 different options. The reference frequency can be interpreted as the channel-spacing of the final synthesiser. The “N-counter” divides the output of the external voltage-controlled […]

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