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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 […]

Digit Led Display

Digit LED Display for audio level indicator using 7414, 7493A, 1N4148, 5v Led display board for audio level indicator using 7414, 7493A, 1N4148, 5v

The high tones

The treble controls the high tones, middle the mid-range tones and bass controls The treble controls the high tones, middle the mid-range tones and bass controls

800W Audio circuit schematic diagram best of the best

Here the schematic diagram of 800 watt audio amplifier with MOSFET, 800W Audio circuit schematic diagram best of the best of audio amplifiers with the other MOSFET, freecircuit diagrams lost This amplifier best of the best.

servo pre amp circuit using KA9257

servo pre amp circuit using KA9257 DUAL POWER OPERATIONAL AMPLIFIER The KA9257 is a monolithic integrated circuit consisting low noise amplifiers and regulated power supply for car stereos. FEATURES suitable for car stereos. Low noise amplifier. Voltage regulator included. Good ripple rejection. High channel separation (65dBTyp). Minimum number of externalparts required.

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