Stdi.cloud

Make inverter 5V to 220V just₹120 This inverter can use comments 4.7K ohms resistance, Z44 n-channel MOSFET, 2Amp 12-0-12 transformer, 5Volt DC supply Bulb and bulb holder. Transformer 3Amp T1 12-0-12

Make Inverter 1.5volt to 220volt Hello wellcome to science and technology discovery. This inverter make just  ₹15 .  This inverter operated 220V  9watt  60HZ bulb.  This transformer you can get old mobile phone adaptor.  This type of transformer 6 legs, you can check transformer using Multimeter  Setmultimeter 200 ohm and check frist 2 pin 3.6 ohm to 5.6 ohm, second next 2 pin 1.2 ohm, third next 2 pin 0.8 ohm. This  inverter operated transistor 2N3055 NPN transistor frequency 2.5MHz, DC collector current 15A. Power Dissipation pd 115 watt. DC current gain hFE 20. Using resistance 33 ohm to 1K ohm +-5% you can use.

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

Make MW transmitter Using NE555   Using comments NE555 timer chip 330 ohms, 1K ohms resistance 0.001uF capacitor Condenser mic and 9V DC power supply. Power supply :-  Using supply only DC stable you can use 9Volt battery and smps supply And mobile adaptor unfortunately it is no 9Volt but approx 7V max. NE555 timer chip :- This chip number 1 pin Ground, pin 2 Trigger, pin 3 Output, Pin 4 reset, pin 5 Cout, pin 6 Three, pin 7 discharge, pin 8 VCC. Important notice this chip you cannot supply voltage 9 volt up otherwise timer cheap was burning. This chip integrated 2 op-amp or 1 SR flip-flop or one NPN transistor and voltage divider. Supply voltage minimum 4 volt up and maximum 10 volt. Capacitor :- Using capacitor 0.001uF this capacitor number 102. You can used any condenser mic MW frequency :-  Medium wave is the part of the medium frequency radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with limited sound qualit

FM transmitter signal booster circuit Diagram This signal Amplifier (booster) work only FM band. Important notice you can you big antana and antana place teddies on your home. so your signal more than area of coverage this booster more than 10 km range. You can watch the video go my youtube channel. This circuit Diagram work frequency boost up low amplitude to high amplitude. You can not use MW and SW transmitter because this design for FM circuit only. Using transistor - BC547. You can use any of MHz frequency range transistor examples (BC548, 2N222 extra you can search google). Using capacitor 1uF ceramic capacitor. You can also use 1nF, 10nF, 0.001uF. capacitor place transistor or inductor maintain distance 1CM. You cannot maintain distance than your frequency more than noise added your signal. Using resistance 220K ohms and 10K ohms. Using incuctor made than use you screwdriver throttle 10 turn 20 SWG wire. Using powe supply max volt apply 15V but I am using j