Power Inverter DIY in 4 minutes. HD

In 4 minutes you can build a power inverter from junk using an old center tap 10:1 transformer, a 10 k resistor and a 2n3771 or any equivalent NPN transistor. stupid simple, perfect for you hunting lodge! will run a battery right down to 6 volts with an rms output between 60 and 120 volts depending on input power and roughly 350Vpp(enough to light a florescent light without a ballast), a 10k pot can be used between the base and ground to adjust output power/efficiency to suit the load and act as an on/off switch. enjoy! Instructions: 1) connect the center tap transformers center tap to the positive terminal on the battery(the transformers secondary windings). 2) connect one of the secondary windings adjacent to the center tap to the collector of the transistor. 3) solder the 10k resistor to the remaining secondary winding and then to the base of the transistor. 4) connect the emitter directly to the negative line of the battery. 5) connect a 2-5k potentiometer between the base and the ground, this will adjust the class C operation and subsequently the pulse width. 6) connect the load to the primary side of the transformer(do not use it for sensitive equipment unless you know what you are doing) A 2n3055 transistor works better then a 2n3771 but any T03 npn transistor will work, biasing and adjusting the resistance values is key to making it efficient and long lasting. adding a capacitor between the ground and the center tap will vastly increase output performance. The system is resonance oscillator and the frequency is dependent on the transformer, since standard transformers are designed around 60HZ, the frequency is near there as well if it is tuned correctly.