Connecting a 12V battery directly to a 48V inverter will not work because the inverter requires at least 48 volts to operate. The inverter may not turn on, or if it does, it could enter protection mode due to insufficient voltage. This mismatch can potentially damage both the battery and the inverter.
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[pdf] In this post I have explained 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. .
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. .
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. .
In the above explained 48V inverter circuit I have used a BC546 emitter-follower series pass circuit to step down the 48V DC to 9V DC for supplying the IC 4047. However, if the BC546 transistor is not available, we can incorporate a zener/resistor based.
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