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Pulse oscillator for power supply

Pulse oscillator for power supply

In the pulse power supply the specialized digital IC with forming of temporal pause between impulses are used. Also pulse oscillator for power supply can be built on simple logic - fig. 1a & 2a. On the fig. 1b and 2b oscillograms of circuits are represented: 1 – for main pulses, 2 – for inversion.

Fig. 1. Pulse oscillator for power supply with main pulses.
(Click to enlarge the Circuit)

Fig. 2. Pulse oscillator for power supply with inversion pulses.
(Click to enlarge the Circuit)

If as a simple generator to apply a generator guided by voltage, we will have dependence: F=f(Uout), tuning frequency depending on the output voltage Uout, change of frequency from the change of voltage (or current) – frequency automatic tuning. Applying a generator with the change of pulse period-to-pulse duration ratio, we will have the dependence S= f(Uout), change of pulse period-to-pulse duration ratio from the change of output voltage (or current) – pulse-width automatic tuning. Pulse-frequency modulator are described in chapter “converters”. Fig. 3 - oscillograms for pulse-width modulator are represented.

Fig. 3. Oscillograms of pulse-width modulator.

added 28.12.08 20:44:00 | looked over 4474 times