Search found 6 matches

by Colin Wonfor
Sat Jun 24, 2017 10:52 am
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16439
Views: 4641585

Re: Nothing In Particular

DQ - 68 :| I just turned 70 3 weeks ago. :bounce: Everyone is right (I must be in a good mood today) the benefits of the bigger amps is not power, that is ancillary. Anyway watts beyond a certain level means bugger all and over another certain level is dangerous in domestic systems. I put the domes...
by Colin Wonfor
Sat Mar 18, 2017 6:24 pm
Forum: Solid State
Topic: Electronic filter.
Replies: 10
Views: 14290

Re: Electronic filter.

Unitrode did a nice SMPSU in a high speed switcher, using current doubling which allowed us to use smaller caps with chokes, a nice design.
We re-worked it with a full resonant bridge circuit and made it RAD Hard and now they are whizzing over head in space. We also used Si plated in Gold.
by Colin Wonfor
Tue Mar 07, 2017 7:28 am
Forum: Solid State
Topic: Dunn - Wonfor.
Replies: 3
Views: 8691

Re: Dunn - Wonfor.

OK so tell me why we should be mention Adolf.
by Colin Wonfor
Mon Jul 27, 2015 6:33 pm
Forum: Solid State
Topic: High Power, High Fidelity Lateral MOSFET Power Amplifier
Replies: 3
Views: 7900

Re: High Power, High Fidelity Lateral MOSFET Power Amplifier

A Nice simple circuit, are the FET's still available?
That site is very good for lots of stuff.
by Colin Wonfor
Mon Jul 27, 2015 6:29 pm
Forum: Solid State
Topic: The Brief History of my life with SECA designs
Replies: 2
Views: 6355

Re: The Brief History of my life with SECA designs

Sir Philip, it has been done.

Best Col
by Colin Wonfor
Mon Jul 27, 2015 5:33 pm
Forum: Solid State
Topic: The Brief History of my life with SECA designs
Replies: 2
Views: 6355

The Brief History of my life with SECA designs

The Brief History of my life with SECA designs The SECA amplifier designs have been in use for a long time from the early days of valves to the present day. With valves it was a simple matter of biasing the triode and having a transformer coupling to the loudspeaker. Even the first transistor design...