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FM transmitter using crystal   Power supply   :-   Using power supply stable DC voltage 2 V to 3.7 V max. You can only use battery because battery is perfect for this circuit battery output doesn't any noise. Components  :-  Transistor BC 547 , Resistance 100 ohm, 4.7K ohm.   Capacitor 1nF, 47pF,              22pF.   Inductor 1uH. Condenser mic any .       Resistance  :-   Using resistance 100 ohm +-5% changing 1/3 watt, 4.7 K ohm +-5% changing 1/3 watt. Video link -  https://youtu.be/aV7K2NHrHTM 3 Volt Circuit Diagram Capacitor  :-   1uF this capacitor positive pin connect 4.7K ohm resistance one pin and another pin connect 2K ohm resistance one number pin. 5 Volt Circuit Diagram This Circuit Transmitter range 0.3 Kilometre (300 Metre) to 0.5 kilometre (500 Metre) without any obstacle otherwise range 0.2 Kilometre (200 metre) anywhere. It's a spy device. Discuss about listing components Used transistor BC 547 for oscillator and I'm using crystal for noise

Make Induction Heater Video link -  https://youtu.be/YlY6zy8DpYo This circuit use full comments value or comments name. Using inductor 10uH to 100uH you can use everyone this range or heating inductor coil 5turn use 16SWG to 22SWG I am use 22SWG you can use any of this range. Using MOSFET Z44 very frist switching  Z44 frequency range 200MHZ to 4GHZ. Another MOSFET IRF540 I am using this circuit Z44 you can use any of this first switching MOSFET. Using Diode 2N4007 this is American diode This frist recover Diode you can use any frist recover Diode like 2N4107. Using resistance 330 ohm resistance use gate biasing 330 ohm to 470 ohm you can also use this range of resistance. Using 10K ohms resistance gate pin discharge or noise filter you can use 10K ohm to 20K ohm. Using capacitor 1.5uF you can use 1.5uF to 20uF range I am using this circuit 1.5uF. IRFZ44  datasheet this is a third generation Power  MOSFET  that provide the b

RF Amplifier using op-Amp