A self-oscillation type converter comprises a transformer and a switching transistor. The switching transistor is connected in series to a primary winding of the transformer. A start current is applied from a power supply line to the switching transistor through a start resistor, so that the switching...http://www.google.fr/patents/US5012399?utm_source=gb-gplus-shareBrevet US5012399 - Self-oscillation type converter
