Search found 298 matches
- Fri May 26, 2023 12:57 am
- Forum: General Discussion
- Topic: eking advice on choosing a driver circuit for high-power LED control with a microcontroller.
- Replies: 5
- Views: 35225
- Wed Mar 15, 2023 1:22 am
- Forum: General Discussion
- Topic: Historic off topic...
- Replies: 18
- Views: 83269
Re: Historic off topic...
Looks like 19 years for me... Dunno know how I missed this post until now... Maye it's the fact I've only been here a couple of times since retiring 5 years ago... Seems like I have less time since retiring.. Or mebbe it's because I got old
- Fri Aug 06, 2021 10:13 pm
- Forum: General Discussion
- Topic: Lightning: I got blowed up real good!
- Replies: 5
- Views: 13790
Re: Lightning: I got blowed up real good!
A friends old Dell laptop got hit a while back, The wireless wasn't working when he bought it (used) and network card died on this last hit.. I was able to get him back online by using a USB Network adapter, until his new laptop got here... https://www.amazon.com/gp/product/B07ZP4YSDM/ref=ppx_yo_dt_...
- Wed May 26, 2021 12:00 am
- Forum: General Discussion
- Topic: Crappy Headphone wires.......
- Replies: 12
- Views: 36015
Re: Crappy Headphone wires.......
I believe what you're looking for is "Litz wire" Here's one source.... https://www.surplussales.com/Wire-Cable/LitzWire.html
- Sun Jan 03, 2021 2:58 am
- Forum: General Discussion
- Topic: Greetings!
- Replies: 31
- Views: 311803
Re: Greetings!
[quote=Lenp post_id=88545 time=1609508378 user_id=4309]
Happy holiday to all that are still hanging around here. That's 365 more sunrises and sunsets behind us, and my sincere hopes for many more.
Illegitimi non carborundum
[/quote]
The green side of the grass is the place to be......
Happy holiday to all that are still hanging around here. That's 365 more sunrises and sunsets behind us, and my sincere hopes for many more.
Illegitimi non carborundum
[/quote]
The green side of the grass is the place to be......
- Mon Nov 02, 2020 10:26 pm
- Forum: General Discussion
- Topic: Power Supply for mains circuit _linear or switch mode
- Replies: 7
- Views: 10561
Re: Power Supply for mains circuit _linear or switch mode
Your AC currents will be different from your DC current. Here's some info to explain.... https://www.hammfg.com/electronics/tran ... /rectifier
- Sat Sep 26, 2020 1:23 pm
- Forum: General Discussion
- Topic: SRM motor
- Replies: 3
- Views: 6970
Re: SRM motor
This is the first I hear of this, but then again, I've been retired for 3 years... I wonder what the pricing structure is like.. Apparently you'd be stuck using their controller, like it or not...Sounds interesting, motors and controls were a big part of what I taught...
- Sat Sep 26, 2020 1:35 am
- Forum: General Discussion
- Topic: Rewiring a battery charger
- Replies: 5
- Views: 13284
Re: Rewiring a battery charger
You could use a bridge to get the 24 volts, but you would get screwy voltages at the lower settings, Is that an issue ? Does this have multiple taps on the primary ?..If it does the way they get the higher charging rate is by stepping up the voltage, and you could use that to your advantage to dial ...
- Wed Sep 02, 2020 2:04 am
- Forum: General Discussion
- Topic: Making PCBs at Home
- Replies: 11
- Views: 39665
Re: Making PCBs at Home
When I was teaching we made several types of boards using copper clad and etch available here....https://www.jameco.com/shop/StoreCatalogDrillDownView?langId=-1&storeId=10001&catalogId=10001&freeText=etch&search_type=jamecoall Also had a few students that used a wide "Sharpie&qu...
- Wed Sep 02, 2020 1:52 am
- Forum: General Discussion
- Topic: LAX timing device is faulty, help me, I am grateful
- Replies: 1
- Views: 5521
Re: LAX timing device is faulty, help me, I am grateful
We need more information than that..
- Wed Sep 02, 2020 1:42 am
- Forum: General Discussion
- Topic: 18 Volt Sub C NiCd Battery Packs (1.2 x 15)
- Replies: 11
- Views: 13475
Re: 18 Volt Sub C NiCd Battery Packs (1.2 x 15)
[quote=sandpiper post_id=88249 time=1598507035 user_id=28505] Thanks Janitor Tzap and Externet. Years ago I used a battery rebuild service. The first time it was ok. The second time I received defective packs. If you have expensive lithium packs, I suppose it makes sense to use a battery rebuild ser...
- Tue Aug 04, 2020 2:09 am
- Forum: General Discussion
- Topic: looking for a timer
- Replies: 13
- Views: 15445
Re: looking for a timer
Strange !!! I haven't dealt with MPJA in years... Today I see this and get a sales flyer from them !! What are the odds..
- Mon Jul 20, 2020 1:45 am
- Forum: General Discussion
- Topic: The Eternal $19.00 Radio
- Replies: 13
- Views: 19610
Re: The Eternal $19.00 Radio
Back in the early 60's radios would advertise how many transistors were inside, like "6 transistor high fidelity".. Opened one up one day to see these wonder devices, it had the advertised quantity of transistors soldered to the board but a couple of them had no traces going to them !!
- Mon Jul 20, 2020 1:30 am
- Forum: General Discussion
- Topic: Linear power supply problems
- Replies: 10
- Views: 10016
Re: Linear power supply problems
I'd test the 3055's , you may have one or two of them failing to turn on. That would cause the others to flake out..
- Wed Apr 29, 2020 1:49 am
- Forum: General Discussion
- Topic: fading away
- Replies: 25
- Views: 41347
Re: fading away
You can pull the emergency release handle (for opening door when power is off). Running the motor back and forth without the door might help in your diagnosis ..