A very simple portable 12v to 250V converter can be designed using this
circuit diagram. This 12 to 250V converter is designed for portable use
with a 12 V car battery.A built astabil multivibrator T1 and T2
generates a rectangular wave at a frequency of 50 Hz. As T1 and T2 drive
alternative exit stage system also works in "push-pull". When T1 lead
by passing a current T3: T5 and that it engages the latter transistor
connects to a half battery of 12 V secondary winding of the transformer
Tr When T2 network drive, T6 transistor coupled to the battery the other
half of the network adapter.
Simple 12V to 250V Converter Circuit Diagram
If it is used for output stages 40 411 RCA transistors, the current
through secondary winding can be up to 10 A, giving a power output of
180 watts. If you use 2N3055 transistors, power output will be about 90
watts. Since the output transistors are driven to saturation, they have
very high mounted radiators.Although circuit is simple construction and
has high efficiency disadvantage is rectangular output voltage which, in
the absence of a regulator is dependent on task: small loads, the
output voltage is 250 V ac (not working properly for the engine speed
control, light dimmers, televisions, hi-fi equipment.
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