In Reply to: Headphone Transformers posted by Triode_Kingdom on February 10, 2013 at 16:45:03:
Now for something completely different :-)
get a 115+115:115+115 toroid transformer.
Series both the primary and secondary windings for 230:230
add the appropriate turns by hand to get the desired secondary voltage to translate to the desired load impedance.
Place one of the 230V windings in the plate and a Bypassed CCS in the cathode. Take a current mirror of the cathode CCS and feed the other 230V winding with the opposite current direction of the primary.
If that is too much work, just get a 230:9V toroid, put the appropriate number of parallel 10m45's in the plate and cap couple to it.
The lower the VA rating of the toroid the better... you give up a little in DCR but gain in inductance.
dave
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Follow Ups
- RE: Headphone Transformers - dave slagle 18:41:32 02/11/13 (4)
- RE: Headphone Transformers - Triode_Kingdom 21:40:10 02/11/13 (2)
- RE: Headphone Transformers - dave slagle 22:48:05 02/11/13 (1)
- RE: Headphone Transformers - Triode_Kingdom 05:52:37 02/12/13 (0)
- RE: Headphone Transformers - drsx 19:08:41 02/11/13 (0)