Voltage Doubler Circuit Output Waveform. The half wave rectifier produces 5 v 4 3 v at node 3. The doubler provides another 10 v 8 4 v between nodes 2 and 3.
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Current cannot flow through the rectifier d1 due to its one sided conduction. The circuit shows its necessity in all such applications where a high level of voltage is required when the input source is of low amplitude. The diagram and output waveform is demonstrated in figure 3.
The ripple frequency is now twice the supply frequency e g.
The doubler provides another 10 v 8 4 v between nodes 2 and 3. Here during the positive cycle of input voltage the diode d1 becomes forward biased and capacitor c1 becomes charged to vsmax peak voltage. Rectifier d2 permits current to flow in only one direction to the load. The circuit consists of only two diodes two capacitors and an oscillating ac input voltage a pwm waveform could also be used.
