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|English to German translations [PRO]|
Tech/Engineering - Electronics / Elect Eng / control circuits for vehicle headlamps
|English term or phrase: negative transient spike protection|
|Es geht in diesem Patent um die Steuerung von Scheinwerfern in Kfz|
The control signal from input connection 12 is coupled to the base of Darlington transistor Q5 resistor Rl and capacitor Cl. Resistor Rl and Capacitor Cl AC couple the signal from input connection 12 to Darlington transistor Q5. This AC coupling allows low beam operation of the headlight using the manual control signal from input connection 14 in the event of micro controller 13 failure. The combination of resistor Rl and capacitor Cl also provide isolation of micro controller 13 from the downstream elements of circuit 10 in the event micro controller 13 fails. Diode CR1 is an isolation diode that provides isolation for elements coupled to input connection 14. Diode CR2 provides ***negative transient spike protection*** for transistor Q5 rnamtaining the base emitter voltage Cl clamped at about at least -0.7 volts. Diode CR2 ensures proper discharge of capacitor Cl to generate the PWM signal.
Danke für Eure Hilfe!
Selected response from:
Local time: 20:18
3 KudoZ points were awarded for this answer
45 mins confidence: peer agreement (net): +1
Schutz vor (kurzzeitigen/transienten) negativen Spannungsspitzen
Spannungsspitze f., Nadel f. (Impulsabbild), Überschwingspitze f., Störspitze f. (EMB) || ...
(Siemens A&D Transl. Wörterbuch industrielle Elektrotechnik, Energie- und Automatisierungstechnik. 2004)
Local time: 20:18
Specializes in field
Native speaker of: German
PRO pts in category: 345
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