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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 […]

Dual Pre-power Amplifier, volume controller and DC motor speed controller circuit

Dual Pre-power Amplifier, volume controller and DC motor speed controller circuit using KA22134 Dual Pre-power Amplifier, volume controller and DC motor speed controller circuit using KA22134

home alarm systems

home alarm systems home alarm systems using CCTV Camera Auto Electronic Shutter Control Auto Switch CCTV Camera Auto Electronic Control Auto Switch circuit diagram CCTV switch circuits using 555, 74HC14, 4017, 2N2222 home alarm systems cameras installed at different locations in the city have been dismounted following the home and looking for CCTV camera and […]

designing electronic circuits

designing electronic circuits Audio amplifier Circuit and designing electronic circuits Using KA2211 designing electronic circuits designing electronic circuits

Audio amplifier AN7135 7w

Audio amplifier AN7135 7w Electronic circuit diagram audio amplifier AN7135 7w

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