60Watt RF (Radio Frequency) Amplifier CircuitThe 60Watt RF (Radio Frequency) Amplifier is simple all solid accompaniment ambit application ability mosfet IRF840. The IRF alternation of ability transistors are accessible in assorted voltage and ability ratings. A distinct IRF840 can handle best ability achievement of 125 watts. Since these transistors are acclimated in inverters and smps they are calmly accessible for about Rs: 20/-.
The IRF beeline amplifier can be affiliated to the out put of accepted VWN-QRP to get an achievement of 60 Watts. The ambit draws 700 ma at 60 Volt Vcc. Good calefaction bore is a charge for the ability transistor.
Alignment of the ambit is actual easy. Connect a copy amount to the out put of the circuit. You can use some baby ball like 24V 6Watts as the copy load. I accept alike acclimated 230V 60Watts ball as copy amount with my IRF840 ability amplifier alive at 120Volts. Adjust the 10K preset to get about 100 ma Cesspool current. I acclimated aboideau voltage of 0.8V with my beeline amplifier. A heigh aboideau voltage can accomplish the ability transistor get distroyed by cocky oscillation. So aboideau voltage charge be beneath 2V and acclimation at 1V will be safe.
Bifalar transformaer T1 is anguish with 8 turns 26SWG on 1.4 x 1 balun core. The braid on the cesspool of IRF is 3 turns 20 SWG anguish on 4 cardinal of T13.9 torroids (two torroids are ample to anatomy a balun core). The RFC at the Vcc band is 20 Turns 20 SWG anguish on T20 torroid.
