Search found 12339 matches

by Nick
Tue May 19, 2020 11:35 am
Forum: Assorted Stuff
Topic: Corona Virus Lock Down 'Rant' Thread.
Replies: 559
Views: 18159

Re: Corona Virus Lock Down 'Rant' Thread.

But THIS time it will be different... Nah, there's no chance of us learning from history, it would have happened by now if it was going to... I wonder if I need to create a <sarcastic/> tag for this place :-) I think there might be a difference between Trump and the other bunch; I don't think he wi...
by Nick
Tue May 19, 2020 9:53 am
Forum: Assorted Stuff
Topic: Corona Virus Lock Down 'Rant' Thread.
Replies: 559
Views: 18159

Re: Corona Virus Lock Down 'Rant' Thread.

But THIS time it will be different, THIS time its a good thing because reason. MAGA...

The clue is in the present day part of "history up to the present day", so no we don't seem to be able to learn.
by Nick
Mon May 18, 2020 9:06 am
Forum: Assorted Stuff
Topic: Many Happy Returns Ant
Replies: 16
Views: 299

Re: Many Happy Returns Ant

Have a good one.
by Nick
Sun May 17, 2020 7:10 pm
Forum: Assorted Stuff
Topic: Corona Virus Lock Down 'Rant' Thread.
Replies: 559
Views: 18159

Re: Corona Virus Lock Down 'Rant' Thread.

Given the symptoms a positive test would have little reason to be doubted. IMHO.
The test is very dependant on how well the swabs are taken
Seems likely that that could only affect the test in the negative direction.
by Nick
Sun May 17, 2020 3:32 pm
Forum: Everyones Projects
Topic: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Replies: 1132
Views: 144713

Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)

pre65 wrote:
Sun May 17, 2020 12:50 pm
I have the RCA 112A data sheet, and yes there are all sorts of things on the internet, but not all can be believed.
Exactly which is why I wondered why you posted
although I have read that slightly starving filaments may be an improvement.
by Nick
Sun May 17, 2020 12:35 pm
Forum: Everyones Projects
Topic: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Replies: 1132
Views: 144713

Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)

I just looked at the spec sheet for the 12A.

You can read all sorts of things on the internet.
by Nick
Sun May 17, 2020 11:18 am
Forum: Everyones Projects
Topic: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Replies: 1132
Views: 144713

Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)

Or 0.25A as the rest of the world would describe it. Some may argue you would need to adjust the current until you get 5v across the filament.
by Nick
Sat May 16, 2020 10:14 pm
Forum: Speakers
Topic: Something stirs in the Undergrowth
Replies: 2632
Views: 416784

Re: Something stirs in the Undergrowth

not the voltage, and this current is 90 deg out of phase with the voltage for an inductor.
Yes, but the voice coil is not a inductor, its a motor, so the power factor angle will be less than 90.
by Nick
Sat May 16, 2020 9:12 pm
Forum: Assorted Stuff
Topic: what are you doing ?
Replies: 383
Views: 12524

Re: what are you doing ?

Wasn't about to let a 13 year old loose with sharp objects
I have a memory of using a woodworking lathe to make a candlestick holder in first or second year woodwork at secondary school, so that would be around that age.
by Nick
Sat May 16, 2020 6:45 pm
Forum: Speakers
Topic: Something stirs in the Undergrowth
Replies: 2632
Views: 416784

Re: Something stirs in the Undergrowth

Yep, like Mark did for a few seconds I was thinking in terms of optics where solids have a slower speed of propagation. Unfortunately reality gets in the way again.
by Nick
Sat May 16, 2020 2:37 pm
Forum: Solid State
Topic: FET and mosfet: reading numbers.
Replies: 17
Views: 507

Re: FET and mosfet: reading numbers.

I built a F2 and a F5, I got the fets to make a F3 but never made it. Should still have them somewhere.
by Nick
Sat May 16, 2020 12:46 pm
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 11533
Views: 1002842

Re: Nothing In Particular

I remember them well.
by Nick
Sat May 16, 2020 10:06 am
Forum: Solid State
Topic: FET and mosfet: reading numbers.
Replies: 17
Views: 507

Re: FET and mosfet: reading numbers.

Other way around. The micros doc is from the bottom.
by Nick
Sat May 16, 2020 1:46 am
Forum: Solid State
Topic: FET and mosfet: reading numbers.
Replies: 17
Views: 507

Re: FET and mosfet: reading numbers.

The gate is the middle that will do in this case.
by Nick
Fri May 15, 2020 10:05 pm
Forum: Solid State
Topic: FET and mosfet: reading numbers.
Replies: 17
Views: 507

Re: FET and mosfet: reading numbers.

It should say, but here are two sheets from the same company for the same device that show different pinouts. (one from the bottom, one from the top) http://www.linearsystems.com/lsdata/datasheets/201110%20-LSK170%20Rev%20A17%20dated%202017%2008%2028.pdf https://shop.micross.com/pdf/linear_lsk170.pd...