Nice Eico ST70 power transformer
Posted: Mon May 20, 2013 6:12 am
This is a nice EICO ST70 power transformer, nominally 360-0-360 VAC at 300 mA, one 5V at 2 A winding, two 6.3 V windings at ~3.5 A each, and a 80V bias tap. The transformer came out of a working amp and tests good. The transformer was cleaned and sprayed flat black for the body and gloss black for the cover.
This is much beefier than the stock Dynaco ST-70 transformer. Plenty of power for a stereo amp producing ~35W per channel.
For transformer specialists the primary resistance is 0.98 ohms, and the HV winding is 46 ohms (across the full winding). The turns ratio is 6.32. The transformer will produce about about 460 VDC with the specified GZ34 and 480 VDC with SS full wave rectification.
Asking $85 shipped priority mail to continental US. The transformer weighs 10 lbs and is about 3.5 by 4 by 4.5 inches.
Note: revised specifications (Don't trust SAMS!)
Make an offer or will trade for good 600VCT power transformer producing at least 180 ma.
Best,
Dan
This is much beefier than the stock Dynaco ST-70 transformer. Plenty of power for a stereo amp producing ~35W per channel.
For transformer specialists the primary resistance is 0.98 ohms, and the HV winding is 46 ohms (across the full winding). The turns ratio is 6.32. The transformer will produce about about 460 VDC with the specified GZ34 and 480 VDC with SS full wave rectification.
Asking $85 shipped priority mail to continental US. The transformer weighs 10 lbs and is about 3.5 by 4 by 4.5 inches.
Note: revised specifications (Don't trust SAMS!)
Make an offer or will trade for good 600VCT power transformer producing at least 180 ma.
Best,
Dan