SU492981A1 - Single Transistor Inverter - Google Patents

Description

I

The invention relates to the field of converting technology and can be used in power supply systems for converting DC voltage.

Single-ended transistor invertors are known, which contain a terminal transistor encompassed by a transformer circuit. Node-coupled transistor, connected in parallel to the input circuit of the terminal transistor, triggers the & a capacitor and several control transistors of resistors.

A disadvantage of the known inverters of this type is the large power consumption.

power.

In order to increase the efficiency The proposed inverter, the base of the pre-terminal transistor, is made up of a chain of the first control transistor connected in series, the legs of the resistor, the second control transistor, and the charging resistor. A capacitor is connected between the base of the terminal transistor and the emitter of the second control & transistor. Between bases first

 and the second control transistor includes a third transistor, the base of which forms the input control terminal of the inverter. The drawing is a diagram of the proposed inverter. It consists of the transistors of the terminal 1, the pre-terminal 2, the first control 3, and the second control 4 of the charging 5 resistors and the discharge 6 and start-up capacitor 7.

A winding 9 of positive feedback of the output transformer 1O is connected to the input of the thyristor 1 through the diode 8 Between the bases of the transistors 3 and 4, the third control transistor 11.

The scheme works as follows.

When a pulse is turned on to the control input of the inverter, locking transistor 11, transistor 4 is opened and capacitor 7 is charged through resistor 5 and input of transistor 1. Transistor 1 opens, and under the voltage of winding 9 remains open 2 1L of stopping triggering their I-pulse.