Electro 612-T Retrofit

Variable Filtered DC power supply (circa 1955).

Specifications

• 0 to 16VDC
• 10A continuous, 20A intermittently
• Original Radio Shack catalog price in 1955 was $39.95.

Included files

• Schematic (KiCad)
• Original Documents

Updated / Replaced Parts

• Replaced selenium rectifiers with Vishay 25 Amp 400 volt bridge rectifier (GBPC2504-E4/51).
• Replaced output connectors with Deltron Banana Jacks (552-0100 BLK, 552-0500 RED).
• Added 120VAC Round Green Diamond Lens Lamp (0.5" panel press fit) in place of 0-6VDC toggle switch.
• Added 500ohm 10W Xicon cement power resistor for bleeding the capacitor.
• Replaced faulty voltmeter with Zoda 0-30VDC meter.
• Replaced faulty ammeter with Zoda 0-20A meter.