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500W Mos-Fet Power Inverter from 12V to 110V/220V
This circuit will provide a very stable "Square Wave" Output Voltage.
Frequency of operation is determined by a pot and is normally set to 60 Hz.
Various "off the shelf" transformers can be used.
Or Custom wind your own FOR BEST RESULTS.
Additional MosFets can be paralleled for higher power.
It is recommended to Have a "Fuse" in the Power Line and to always have a "Load connected", while power is being applied.
The Fuse should be rated at 32 volts and should be aproximately 10 Amps per 100 watts of output.
The Power leads must be heavy enough wire to handle this High Current Draw!
Appropriate Heat Sinks Should be used on the RFP50N06 Fets. These Fets are rated at 50 Amps and 60 Volts.
** Other types of Mosfets can be substituted if you wish.
The LT1013 offers better drive that the LM358, but its your choice.
The Power transformer must be capable of handling the chosen wattage output.
Also, Appropriate Heat Sinks are Necessary on the Mos-Fets.
Using a rebuilt Microwave transformer as shown below, it should handle about 500 watts Maximum.
It requires about 18 turn Center-Tapped on the primary.
To handle 500 watts would require using a 5 AWG wire. Pretty Heavy Stuff, but so is the current draw at that power.
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Build your own LC Meter and start making your own coils and inductors. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils. LC Meter can measure inductances starting from 10nH - 1000nH, 1uH - 1000uH, 1mH - 100mH and capacitances from 0.1pF up to 900nF. The circuit includes an auto ranging and "Zero Out" function to make sure the readings are as accurate as possible ... [more] |
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