Note
The HP-10 was released early in 1961 and replaced the MP-1 as Heath’s mobile power supply. It was designed for use with the HR-20 and HX-20. In 1963 the HP-10 was replaced with the improved HP-13 series. The HP-10 is a fully solid-state device and provides both B+ and bias voltages with a combined continuous power rating of about 120 watts (150 watts intermittent, 50 percent duty cycle). It is designed to operate with an input voltage from 11 to 15 volts. Caution: Do not exceed 15 volts input.
Top panel includes an octal socket for power output, two wing nut terminals for power input, and a fuse. Finished in black anodized aluminum with distinctive heat sink fins.
Pin outs:
1: –125 volts (if unmodified)*
2: common (B–, C+)
3: +300 volts
4: +600 volts
5: unused (if unmodified)*
6: +12 volts out (filaments, etc)
7: 12 volts and relay return
8: relay coil
Shorting pins 7 and 8 should energize the relay and apply power to the unit, causing an audible hum. Caution: high voltage is then present on the output socket.
*It is possible to modify the 125 volt bias output for some other use. For example, the polarity may be reversed, or it may be isolated entirely. Refer to the assembly manual for details.
Input voltage: 11 to 15 VDC (do not exceed 15 volts)
Input current: 2 to 15 amps, as a function of output load
Total power output: 120 watts continuous operation
Suggested load:
600 volts at 200 mA, OR
600 volts at 150 mA AND 300 volts at 100 mA
and –125 30 mA bias
Maximum ambient operating temperature:
120 degrees F at 120 watts continuous,
150 degrees F at 120 watts intermittent operation - 50 percent duty cycle
Efficiency: approximately 75%
Solid State: (2) 2N1147 (GE PNP Vcbo 40 DC, 15A), (5) 1N2071
Photos, general information and specifications from "Heathkit: A Guide to the Amateur Radio Products," by Chuck Penson, WA7ZZE. Used with permission.
