THICK-FILM VOLTAGE REGULATOR FOR THREE-PHASE ALTERNATORS

摘要

1428605 Semi-conductor voltage regulator construction SIEMENS AG 5 Feb 1974 [5 Feb 1973] 05206/74 Heading G3R A semi-conductor voltage regulator for a threephase generator includes components for controlling the generator excitation current and a Zener diode for excess voltage protection. The Zener diode is mounted on a metallic substrate, and the other components form a thick film hybrid circuit on an insulating substrate. The substrates are fixed inside a housing by a heat-conducting adhesive. As shown, a regulator for a vehicle alternator includes a heat conducting housing 1 containing a hybrid circuit 6-9 on a substrate 3 and a Zener diode 5 on a substrate 4. Connections are made through an insulating sheet 16 held by projections 20 on the housing and on a cover which fits into a channel 15 on the housing. A hardenable synthetic resin is poured into the housing through the wall 13 to fill the space between that wall and the sheet 16. The regulator circuit may include a Darlington transistor pair and a Zener diode comparator in chip form.