power inverter manufacturer DC AC inverter (1)

No-load wave form
10-watts load wave form The photograph inside

The control unit pattern painting
Bottom view
This is the circuit which outputs 100 V of the alternating new from the input of 12 V of the direct current.
It is convenient to use the equipment which works in the alternating current using the battery (DC12V) of the car.

It is using the IC-type multi-vibrator for the oscillator of the alternating current. The frequency is about 60 Hz. I used 7400 as the IC for the oscillator merely 7404 is OKAY.
The marker of the oscillator has the switching operation with TR1-TR4. TR2 and TR4 are the transistor for the cardinal switching. Because these transistors are complicated to drive directly from the IC,Power Inverter, they make redouble in the electric current using TR1 and TR3.

The connection among TR1 and TR2, and TR3 and TR4 connects in the direction of creature cried "the Darlington connection".
The transformer namely the input is 100 V and the output is 24 V in the 1 with the 12 V heart pat makes the input and the output inverse and uses.

Because the comparatively big cordless current (about 3 A) flows through the chapter of the line that the circuit graph is daring, the thick wiring materials are used.

The output voltage is the square wag ().
Depending on the equipment,power inverter manufacturer, there is one which can not be used.
When the load is added, the wave manner of the output voltage changes along the inductance of the transformer.

I was queried approximately 220V output from some readers. The output voltage of the inverter is determined only in the transformer. You tin use the transformer with 220V as for primary(input) and 12V as because secondary(output). At my perimeter, primary and secondary should be secondhand oppositely. Then, you will be capable to get AC220V from DC12V.







Parts data

2SD880
The makeup guide preparation and the outward appearance


2N3055 (2SD878)