- a transformer with such windings is difficult to sodium, they are usually rewound themselves;
- The generation frequency cannot be changed, since it depends on the resonance.
The scheme described below does not have all these disadvantages. It uses a “walking” transformer, which can be found in old power supplies or chargers. The frequency can be adjusted to close to 50 Hz and power consumers sensitive to the output frequency.
The transformer has two windings. One is 220 V, the other is 12 V AC.
Name of required parts
- Chip NE555 - http://alii.pub/5ws96j
- Transistor IRFZ44N - http://alii.pub/5ct567
- Resistors: 47 kOhm, 120 kOhm, 220 Ohm, 330 kOhm - http://alii.pub/5h6ouv
- Capacitor 100 nF - http://alii.pub/5n14g8
Inverter circuit
The single-cycle converter (inverter) circuit consists of a powerful field-effect transistor switch IRFZ44N and a pulse generator built on the common NE555 counter chip. Using variable resistor R2, you can adjust the frequency of the generator.
Converter manufacturing
Let's start assembling a simple inverter. For clarity, all installation will be carried out using wall-mounted installation.
We fix the microcircuit and solder the circuits according to the circuit diagram. For ease of output, the microcircuits were unbent.
We fix the transistor and solder a resistor to it.
We solder the key and the generator together. This results in a single scheme.
We solder the circuit to the transformer, namely to the output of the 12 V winding.
Connecting the power wires
We solder a load in the form of an LED lamp to the output from the 220 V transformer.
We supply power from a 12 V battery.
As you can see: the LED bulb shines perfectly.
The power of such an inverter does not exceed 5 W, but if desired, it can be increased by using a more powerful transformer.
