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Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

audio amplifier chip

audio amplifier chip for home amplifier

Motor Control Applications circuit schema design

Sensor in motor control is used to sense current, position, velocity and direction of the rotating motor. In most , several sensors are used to provide motor feedback information. This sensor is used in the control loop and improve reliability by detecting error conditions that can damage the motor. The three most popular sensor current […]

need schematic diagram RCA ac/dc TV set, model E09304WH, chassis TX825NC. AC power supply resistors burned up.

Bernie H asked: The model no. and chassis no. are on the back of the set, not on the remote. Date of manufacture Oct. 1995. Small portable TV set 115v./12v for RV use. Works ok on 12 volts, 3 or 4 resistors in 115v circuit fried.

Circuit Diagram and Filter 1.3-5W Power RF Amplifier Trans FM

A amplifier of force RF for the FM , is always essential for the amateur that wants it strengthens some small transmitter, that likely already it has manufactured or has been supplied ready. The present circuit can give 50-60W RF force of expense, with control smaller than 15-20W in the region of frequencies of FM, […]

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