Search found 15705 matches

by Nick
Mon Mar 04, 2024 8:41 am
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 31462

Re: OK…so I’m on wi’ summat

I have not tried it with a output stage, but certainly with interstages, small cathode caps can work a little different than you would from those calc's. The fact that you have a inductive load instead of a resistive one can give you a small (though helpful) inductive peak at LF via the LC circuit c...
by Nick
Fri Mar 01, 2024 3:15 pm
Forum: Assorted Stuff
Topic: The Quackery Thread
Replies: 360
Views: 190248

Re: The Quackery Thread

have never yet been really cold. If you have never been, I can thoroughly recommend Iceland. Iceland's a doddle! Lovely as it is (we really like it), it's not that cold... Try spending a winter in Newfoundland and Labrador - we hit -40C (before windchill) in Labrador which I remember well as it's t...
by Nick
Fri Mar 01, 2024 2:24 pm
Forum: Assorted Stuff
Topic: The Quackery Thread
Replies: 360
Views: 190248

Re: The Quackery Thread

have never yet been really cold.
If you have never been, I can thoroughly recommend Iceland.
by Nick
Fri Mar 01, 2024 8:50 am
Forum: Everyones Projects
Topic: 6550 SE Amplifier
Replies: 110
Views: 9406

Re: 6550 SE Amplifier

Benefits are broken and so is the NHS.
Instead of looking at whats broken, point your gaze at the ones that broke it.
by Nick
Tue Feb 27, 2024 11:09 pm
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 6662

Re: Audiojumble 03/03/24

What an interesting valve. A one socket push pull output stage.
by Nick
Sun Feb 25, 2024 4:05 pm
Forum: Everyones Projects
Topic: C3g Aikido Phono
Replies: 319
Views: 81187

Re: C3g Aikido Phono

I would check the frequency response. 470u and 10r is at 33hz -3dB
by Nick
Fri Feb 23, 2024 9:41 pm
Forum: Everyones Projects
Topic: C3g Aikido Phono
Replies: 319
Views: 81187

Re: C3g Aikido Phono

I have a phono stage PCB with a transistor socket for the jfet. Just sort by the anode voltage on the ECC88 on top of the fet. I have found that that single measurement is good enough to sort by op point in the phono stage and gain is directly correlated to that voltage.
by Nick
Fri Feb 23, 2024 2:27 pm
Forum: Everyones Projects
Topic: C3g Aikido Phono
Replies: 319
Views: 81187

Re: C3g Aikido Phono

Don't know, the ones I sent are not matched in any way other than they are outside (on one side) the range of values that I want to use in my phono stage, but that's just to allow simple "build and it just works", So they will be closer matched than just buying a bag from the makers. 2 or ...
by Nick
Fri Feb 23, 2024 10:36 am
Forum: Everyones Projects
Topic: C3g Aikido Phono
Replies: 319
Views: 81187

Re: C3g Aikido Phono

I think I confused source and drain. Sorry about that.
by Nick
Fri Feb 23, 2024 10:34 am
Forum: Everyones Projects
Topic: C3g Aikido Phono
Replies: 319
Views: 81187

Re: C3g Aikido Phono

Not sure I understand the problem. Something like this:
by Nick
Thu Feb 22, 2024 11:20 pm
Forum: Everyones Projects
Topic: C3g Aikido Phono
Replies: 319
Views: 81187

Re: C3g Aikido Phono

Whilst thinking about drafting a pcb for this it occurred to me that the drain resistor I'd drawn for the second LSK170 is bypassed by the paralleled output from the second LSK170. The more I think about this the more I'm confusing myself. So I think I need a common drain resistor rather an individ...
by Nick
Sun Feb 18, 2024 3:44 pm
Forum: Everyones Projects
Topic: C3g Aikido Phono
Replies: 319
Views: 81187

Re: C3g Aikido Phono

I would strongly consider batteries of some form. Floating, quiet, whats not to like.
by Nick
Fri Feb 16, 2024 8:13 pm
Forum: Everyones Projects
Topic: C3g Aikido Phono
Replies: 319
Views: 81187

Re: C3g Aikido Phono

Send me your address
by Nick
Fri Feb 16, 2024 3:03 pm
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16439
Views: 4646146

Re: Nothing In Particular

The only reason he could think of as to why not was to increase profits for the meter manufacturers It may also be because they think it would be better if all the meters in the UK were at most 10 years out of date when it comes to new features. I can understand that that would be a worthwhile targ...
by Nick
Fri Feb 16, 2024 2:26 pm
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16439
Views: 4646146

Re: Nothing In Particular

Seems like this is known and expected (and not only the case for smart meters) All gas meters (Smart and traditional) have an internal battery that power them. This is designed to last for up to 20 years, with a meter recertification (exchanging the meter to replace it with a new one) scheduled ever...