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Posts tagged सही करनेवाला

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 […]

DTMF control RELAY SWITCHING circuit

DTMF control RELAY SWITCHING circuit using M8870, 4013, BC548

LED Circuit

LED Circuit Simple High Power LED Regulator Circuit using BD140 and BC549

Touch Switch Circuit

Touch Switch with Active Remote Circuit using PN2907, 2N2222, 74C14

600Hz Filter for Digital driver

600Hz Filter for Didital driver and Power Supply using TL072

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