I had Heyboer wind a couple of pairs of power transformers for the Eico HF-87 / 89. The first pair was spec'd when our mains was 125V -- it has since dropped 5V.
The original transformer was designed to deliver about 187 VAC on the HV side (which when doubled & rectified gives > 450V); 75V for fixed bias, and 6.3V @ 7.6A !
These units have been tested under 120V and all output voltages are low. That can be fixed with a boost transformer that I'm including with Hyboer's Eico iron. Adding the included boost transformers gets the voltage closer to spec (may vary a bit with your line voltage).
Get the power transformer and the boost transformer for only $50 (+ shipping).
(I've attached a schematic of how to hook it up)
The original transformer was designed to deliver about 187 VAC on the HV side (which when doubled & rectified gives > 450V); 75V for fixed bias, and 6.3V @ 7.6A !
These units have been tested under 120V and all output voltages are low. That can be fixed with a boost transformer that I'm including with Hyboer's Eico iron. Adding the included boost transformers gets the voltage closer to spec (may vary a bit with your line voltage).
Get the power transformer and the boost transformer for only $50 (+ shipping).
(I've attached a schematic of how to hook it up)
