Note
A simple switching power supply designed to provide all required voltages for the HW-17 in mobile operation. Based on a proprietary potted transformer similar to those used in the HP-13 series.
See HW-17 for additional discussion.
Input voltage: 12 to 15 VDC, negative ground
Input current: 10 amps maximum
Operating temperature range: 10F to 122F
High voltage output: 380 VDC, no load; 340 VDC @ 150 mA
Ripple: less than 1% @ 150 mA
Duty cycle: 50%
Switching frequency: about 2500 Hz
Size: 4 wide x 7.5 long x 2.5 high; Weight: 3 lbs
Solid State:
diodes: (2) silicon diodes #57-27
transistors: (2) 40050 #417-90
Photos, general information and specifications from "Heathkit: A Guide to the Amateur Radio Products," by Chuck Penson, WA7ZZE. Used with permission.
