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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 […]

Low pass filter – Subwoofer Bass treble electronic circuit using LM1035

Low pass filter – Subwoofer Bass treble electronic circuit using LM1035 Parts R1 = 39 Kohm R2 = 39 Kohm R3 = 47 Kohm R4 = 10 Ohm R5 = 22 Kohm R6 = 4,7 Kohm R7 = 22 Kohm R8 = 4,7 Kohm R9 = 10 Ohm R10 = 220 Ohm C1 = 39 […]

Securities and exchange Beeper

Securities and exchange Power Reminder Beeper using 74C14 Securities and exchange Power Reminder Beeper using 74C14

Regulator schema diagram

Regulator circuit schema diagram using STK7348, 2SC1815, 2SC3331

RF Amplifier

RF amplifier circuit design RF Amplifier with MOSFET K2668, 2570, 2053 circuit diagram

High Voltage Power Supply

High Voltage Power Supply Electronic Circuit power supply +12v, +16v, 125v for tv using Degauss

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