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You are here: Home / Inverter Circuits / Simple 48V Inverter Circuit

Simple 48V Inverter Circuit

Last Updated on September 12, 2022 by Swagatam 134 Comments

The post explains a simple 48V inverter circuit which may be rated at as high as 2 KVA. The entire design is configured around a single IC 4047 and a few power transistors.

Technical Specifications

I am a big fan of u....i am a wisp. i need an inverter design with 48volt DC input and 230volt output supply and output power in the range up to 500w.

This inverter will be running 24*7*365 days continuously and should not have charging facility. will u please design the circuit and transformer running on 48v.

Thanks & Regards

Circuit Diagram

caution electricity can be dangerous

Circuit Description

Referring to the shown 48V inverter circuit, the IC 4047 forms the main oscillator stage responsible of producing a totem pole outputs for the connected output stage.

The output stage is made by configuring a 4 individual high gain high power transistors modules, two of them on each channel of the push pull output stage.

The TIP122 are themselves internally configured as Darlingtons which are further attached with TIP35 transistor in the Darlington for generating exceptionally powerful current gain across each of the modules.

Setting up the Oscillator Frequency

C1 and R1 must be appropriately set for achieving the desired frequency as per the required specifications...could  be 50 Hz or 60 Hz.

The shown 48 V inverter configuration is designed to generate a massive 2 kva of output power provided the devices are mounted on sufficiently large heatsinks and the battery rated at 48 V, 100 AH, also the transformer rated at 36-0-36V, 1 kva
For lower outputs, one of the modules could be eliminated from each of the channels.

The BJT BC546 is positioned to provide a reasonably fixed 9 V to the IC in order to keep the IC safe from the high battery voltage and within its specified working voltage limit.

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About Swagatam

Swagatam is an electronic engineer, hobbyist, inventor, schematic/PCB designer, manufacturer. He is also the founder and the author of the website: https://www.homemade-circuits.com/, where he loves sharing his innovative circuit ideas and tutorials.
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