The use of a rheostat enables you to control the output voltage of a power supply by the use of variable resistance. The 25 ohm rheostat will change National's power supply by 19.5-25v DC.
Other Items from RHEOSTATS / RHEOSTAT BOX / BATTERY HOOKUP 25 OHM RHEOSTAT - 35 OHM RHEOSTAT - 100 OHM RHEOSTAT - AUXILIARY RHEOSTAT BOX - BATTERY HOOK UP -