07-23-2024, 09:36 AM
Hi guys. Thought I might shed some light on this subject. I went to Nostalgia Air and found a Bosch model 58 schematic. It has dual 45s in push-pull and is from the same year. The power supply has a 4 section divider resistor and a 2500 ohm field coil. You might want to compare this to your Bosch 48 and see if it gives a clue.
http://www.nostalgiaair.org/Resources/917/M0028917.htm
http://www.nostalgiaair.org/Resources/917/M0028917.htm