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Posts tagged 4-element

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 […]

20W 18V Audio Amplifier Circuit using uPC1230H

20W 18 V Audio Amplifier Circuit using uPC1230H

Echo Repeater circuit

Echo Repeater circuit using IC AN6551, MN3005, MN3101 and TR C536 Echo Repeater circuit using IC AN6551, MN3005, MN3101 and TR C536

+5V 10A Regulator circuit

+5V 10A Regulator circuit using 7805 IC

LED drivers circuit using MAX16806

LED drivers circuit using MAX16806

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