Current converter circuit diagram consisting of NE555 and power transistor

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As shown in the figure, a current converter circuit composed of a NE555 and a power transistor. This circuit is a relatively simple circuit that can be rectified to obtain a higher DC voltage.

Current converter circuit

In the figure, a current transformer circuit composed of a 555 timer or the like is shown. In a normal circuit, if a current or voltage conversion is performed, a transformer-type conversion circuit is usually used. In this circuit, the 555 timer and power transistor are used for conversion. The power transistors VT1 to VT4 are bridge circuits, and the switches are alternately operated. When VT1 and VT4 are turned on, the other two power transistors are turned off; the next cycle is reversed, that is, VT1 and VT4 are turned off, and the other two power transistors are turned on. The bridge A and B terminals output an alternating voltage of a rectangular wave, which is converted into a direct current voltage via a rectifier bridge VD:.
555 is used as an oscillation circuit in this figure, and the oscillation frequency is determined by the resistance of R1 and RP1 and C1. This circuit uses VDB as a current-doubler rectifier circuit. If VDB is changed to a voltage doubler rectifier circuit, a higher DC voltage can be obtained.