RM-220 Rectifer Metering Board

Description

The RM-220 is a replacement rectifier/metering board for the Heathkit SB-220 & SB-221. It features modern 1000PIV 3A diodes, new meter shunt resistors, a precision high voltage meter divider string and a high-current zener diode replacement string. The board also features built-in meter protection diodes.

Includes 10 ohm 10 watt wire wound resistor for plate series glitch

Installation not described in instructions and at customers own discretion.  Must refer to sources online for installation, methods.