This is certainly a low-cost 20W/40W fluorescent lamp inverter circuit project. Even so the maximum effective would be to make use of a 40 watt tube (or two 20 watt tubes in series). It is a circuit you may put collectively from junk box parts or assemble from a kit. It certainly is quite easy to construct and no need printed circuit board. The transformer is hand-wound on a ferrite rod (from an old transistor radio) and the winding wire could be salvaged from an old transformer. We’re intentionally maintaining bills down to confirm how cheaply it could be put together.
This is the scheme diagram of 500W power inverter circuit which build using 10 pieces of well-known NPN power transistor 2N3055 to amplify the AC signal produced by multivibrator. The frequency generator / multivibrator is built based on transistors too. All of the components is easy to gathered from the electronic store.
Here the 12V to 220V inverter based MOSFET IRFZ44. This DC to AC inverter circuit work according to unstable multivibrator. In this inverter circuit, IC CD4047 is do the job as being a heart of unstable multivibrator, because of the fact that this IC type delivers a complementary output which has opposite phase to another (pin 10 and 11), and has 50 percent duty cycle that satisfy to generate a pulse for inverter.
Here the 50W inverter circuit build based power MOSFET FQB45N03 and IC TL494. This inverter will convert 12-14V DC input from car battery, become 220V AC output with 50Hz sine wave frequency.
The main oscillator, a voltage reference and comparator collected on DA2. External elements DD1 and DD2 repeated internal structure of the TL494, in the part that works is unstable at low frequencies (false positive D-flip-flop).