Timer in a circuit arrangement for converting a dc voltage into a other direct voltage

摘要

a timer in a schaltungsanordnung to transformation of a dc voltage to another dc voltage is either the time or the start time of a schalttransistors (1). the timer is a common condenser (8), both for the definition of the ausschalt - as well as the start time of the schalttransistors (1) are provided.the influence of the common capacitor (8) via a first resistor (5) and the discharge of a second resistance (6). the two branches are such that the discharge is not decoupled, by the first resistor (5) in the ladezweig is influenced. preferably, a diode (4) for decoupling is used in series with the first resistor (5) in the ladezweig.the timer is in an manner via a control device for the leistungsversorgung of high-pressure gas discharge lamps, particularly in motor vehicles is used.