Search found 5578 matches

by jack
Tue Sep 10, 2024 9:41 am
Forum: Everyones Projects
Topic: 6.3v indirectly heater valve PCB (possible group buy?)
Replies: 472
Views: 167870

Re: 6.3v indirectly heater valve PCB (possible group buy?)

You can also run the pre-regulator sense wire to the base of the secondary regulator - it's not a Kelvin connection, but is the generally accepted way of ensuring the right voltage is delivered to where it's being used. Twisting the appropriate wires and screening the umbilical also can help, as can...
by jack
Mon Sep 09, 2024 7:54 pm
Forum: Everyones Projects
Topic: Amp Number 45
Replies: 9
Views: 614

Re: Amp Number 45

Dave the bass wrote: Mon Sep 09, 2024 7:40 pm
jack wrote: Mon Sep 09, 2024 11:30 am Deeply impressed. 45 is a great number...
42 arguably more so though perhaps?
He's been there, done that, moved on...
by jack
Mon Sep 09, 2024 11:30 am
Forum: Everyones Projects
Topic: Amp Number 45
Replies: 9
Views: 614

Re: Amp Number 45

Deeply impressed. 45 is a great number...
by jack
Sun Sep 08, 2024 5:34 pm
Forum: Everyones Projects
Topic: Elektor Fortissimo-100 amplifier...
Replies: 7
Views: 9818

Re: Elektor Fortissimo-100 amplifier...

NJL3281D/NJL1302D now back in stock from the usual suspects.
by jack
Sun Sep 08, 2024 2:13 pm
Forum: Everyones Projects
Topic: 6.3v indirectly heater valve PCB (possible group buy?)
Replies: 472
Views: 167870

Re: 6.3v indirectly heater valve PCB (possible group buy?)

Pretty sure the reverse protection diode, D1, is not needed in this use case - the LT1085 datasheet is pretty clear. Also, for stability the regulator output cap, C6, is specified at a minimum of 22uF solid tantalum or 150uF Aluminium electrolytic - the capacitor multiplier will not be involved in t...
by jack
Mon Sep 02, 2024 6:16 pm
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16717
Views: 5333473

Re: Nothing In Particular

After many many years of faithful service, my Peak DCA 55 and LCR 40 are being replaced with the newer versions... I need the higher test current of the DCA 75 Pro, particularly for thyristors, so took advantage of an offer and upgraded both. The existing ones, which are in perfect condition, will ...
by jack
Fri Aug 30, 2024 6:31 am
Forum: Assorted Stuff
Topic: Wildlife camera
Replies: 2
Views: 886

Re: Wildlife camera

"Trail camera" is the more common name. I have some of these and they're ok. CARMATE [2019 Upgraded Trail Camera, 16MP 1080P Wildlife Game Cam with Infrared Night Vision 24M Motion Activated, 3 PIR Sensor 36pcs IR LEDs 2.0" LCD Waterproof for Outdoor Hunting Home Security https://amzn...
by jack
Fri Aug 30, 2024 6:19 am
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16717
Views: 5333473

Re: Nothing In Particular

Looks like a Marx Generator stack.

Nice toys!
by jack
Thu Aug 29, 2024 4:41 pm
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16717
Views: 5333473

Re: Nothing In Particular

I perennially found Peak instruments with flat batteries both at work and at home, hence the boxes. A moment ago, I was going to look in the menu to gag the beeper, but when I switched my DCA75 on, it chirped at me then said "low battery". :D In 10 years or more of having Peak DCAs and LC...
by jack
Thu Aug 29, 2024 10:12 am
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16717
Views: 5333473

Re: Nothing In Particular

Don't be in too much of a hurry to get rid of the DCA55. My DCA75 Pro irritated me (beep) and has been relegated to the back of the drawer, with the DCA55 and ESR60 at the front. Peak testers fit nicely in small baby bud boxes, protecting them from being switched on and flattening their batteries. ...
by jack
Thu Aug 29, 2024 8:40 am
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16717
Views: 5333473

Re: Nothing In Particular

On the DCA75, you can turn the beeps etc off from the menu. I need specific capabilities of the 75, so the 55 will go.

I've never had one turn on accidentally - maybe I'm just kinder to mine 😎
by jack
Wed Aug 28, 2024 4:46 pm
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16717
Views: 5333473

Re: Nothing In Particular

After many many years of faithful service, my Peak DCA 55 and LCR 40 are being replaced with the newer versions... I need the higher test current of the DCA 75 Pro, particularly for thyristors, so took advantage of an offer and upgraded both. The existing ones, which are in perfect condition, will b...
by jack
Mon Aug 26, 2024 11:06 am
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16717
Views: 5333473

Re: Nothing In Particular

...however on a happier note, spent a wonderful morning in Denge with an excellent lecture to boot: PXL_20240825_102103311_copy_816x614.jpgPXL_20240825_101600673_copy_816x614.jpg The sound mirrors are on my 'to do' list. We've done Abbots Cliff nearby but not Denge (yet). Just go for it. Two more d...
by jack
Sun Aug 25, 2024 5:17 pm
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16717
Views: 5333473

Re: Nothing In Particular

...however on a happier note, spent a wonderful morning in Denge with an excellent lecture to boot:

PXL_20240825_101600673_copy_816x614.jpg
PXL_20240825_101600673_copy_816x614.jpg (187.66 KiB) Viewed 3848 times
PXL_20240825_102103311_copy_816x614.jpg
PXL_20240825_102103311_copy_816x614.jpg (202.41 KiB) Viewed 3848 times
by jack
Sun Aug 25, 2024 5:11 pm
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16717
Views: 5333473

Re: Nothing In Particular

Was at a church flower show in Appledore and saw a whole box of tasteful albums; someone here would have been in heaven! They were trying to give them away and yet the box was still full. I wonder why? PXL_20240825_151537089_copy_768x1020.jpg PXL_20240825_151431125_copy_768x1020.jpg PXL_20240825_151...