Transformer for Foreplay II
- Thread starter Cary
- Start date
galyons
New member
Allied Electronics model 6K27VF is an exact replacement.
TRANSFORMER, PRI:110-120V, 60HZ, 125VCT@15DCMA, 6.3V @.6a
http://www.alliedelec.com/search/productdetail.aspx?sku=70009000
Allied Electronics model 6K1VF is an "upgraded current" replacement. May allow for some tube rolling variations not possible with the original.
TRANSFORMER, PRI: 110-120V: 60HZ, 250VCT@25DCMA, 6.3V @1.0A
http://www.alliedelec.com/search/productdetail.aspx?SKU=70008994
Cheers,
Geary
TRANSFORMER, PRI:110-120V, 60HZ, 125VCT@15DCMA, 6.3V @.6a
http://www.alliedelec.com/search/productdetail.aspx?sku=70009000
Allied Electronics model 6K1VF is an "upgraded current" replacement. May allow for some tube rolling variations not possible with the original.
TRANSFORMER, PRI: 110-120V: 60HZ, 250VCT@25DCMA, 6.3V @1.0A
http://www.alliedelec.com/search/productdetail.aspx?SKU=70008994
Cheers,
Geary
Natural Sound
New member
galyons said:
Are you sure? The secondary voltages are different, 125VCT vs. 250VCT
Paul Joppa
Moderator
The Foreplay has a long history; hopefully the following will help clarify some parts:
Foreplay I used a 12.6vAC heater supply, and a 125v HV winding with a full-wave bridge rectifier (four diodes).
Foreplay II used a 6.3vAC heater winding, and a 125v HV winding with a full-wave bridge rectifier (four diodes).
Seduction used the PT-1, which was also used by some eXperimenters to upgrade their Foreplays. That transformer has a 6.3vDC heater supply, and a 250vCT HV winding, using a full-wave CT rectifier (two diodes).
Foreplay III used the PT-3 with a 6.3vDC heater supply and dual, paralleled 160v HV windings, which used a voltage doubler to obtain a high voltage which was regulated to 150v with a gas regulator (0D3).
Extended Foreplay used the PT-3 with 6.3vDC heater supply, and the dual 160v windings fed dual-mono fullwave bridge rectifiers (four diodes per channel).
Foreplay I used a 12.6vAC heater supply, and a 125v HV winding with a full-wave bridge rectifier (four diodes).
Foreplay II used a 6.3vAC heater winding, and a 125v HV winding with a full-wave bridge rectifier (four diodes).
Seduction used the PT-1, which was also used by some eXperimenters to upgrade their Foreplays. That transformer has a 6.3vDC heater supply, and a 250vCT HV winding, using a full-wave CT rectifier (two diodes).
Foreplay III used the PT-3 with a 6.3vDC heater supply and dual, paralleled 160v HV windings, which used a voltage doubler to obtain a high voltage which was regulated to 150v with a gas regulator (0D3).
Extended Foreplay used the PT-3 with 6.3vDC heater supply, and the dual 160v windings fed dual-mono fullwave bridge rectifiers (four diodes per channel).
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