Note: Galvanic isolated voltage source using a single photodiode.
A galvanic isolated voltage source able to provide several volts by using a single photodiode is described. A pulse-modulated laser beam is sent to a photodiode. By using a step-up transformer the amplitude of the variable voltage generated by the photodiode is increased. Adding a rectifier cell the variable voltage is converted back into a dc voltage.
Stoican
O S
OS
National Institute for Laser, Plasma and Radiation Physics (INFLPR), 409 Atomistilor St., P.O. Box MG36, Magurele 077125, Romania. stoican@infim.ro