Search found 2147 matches

by jwax
Tue Oct 19, 2021 9:04 am
Forum: General Discussion
Topic: Helium Hotspot
Replies: 0
Views: 40

Helium Hotspot

Anybody need a challenging project? I was looking at purchasing a Helium Hotspot in order to accumulate HNT tokens (Helium Non-fungible Tokens). The tokens can be cashed into US Dollars. Won't describe the whole system, but more info at https://www.helium.com/ The demand for these hotspot boxes is c...
by jwax
Sat Aug 07, 2021 5:35 pm
Forum: General Discussion
Topic: Lightning: I got blowed up real good!
Replies: 5
Views: 3763

Re: Lightning: I got blowed up real good!

Sorry to hear that Janitor Tzap! Are you in a lightning-prone area, i.e., hilltop? Tall trees or towers nearby?
What can you do to avoid another strike? Maybe lightning rods?
by jwax
Wed Jul 07, 2021 6:32 pm
Forum: General Discussion
Topic: DIY pancake slip ring
Replies: 16
Views: 6746

Re: DIY pancake slip ring

Wireless cellphone charger coils could get your DC power, although with added circuitry.
What are the other 2 contacts for?
by jwax
Wed Jul 07, 2021 6:23 pm
Forum: General Discussion
Topic: off grid solar project
Replies: 10
Views: 4903

Re: off grid solar project

qeuker- What is required is a "Solar Charge Controller"- it charges the battery when the battery needs it, and prevents overcharge.
As to getting the most out of low sun/high sun, that takes a Maximum Power Point Controller. It optimizes the panel output depending on incoming sun intensity.
by jwax
Wed Jul 07, 2021 6:18 pm
Forum: General Discussion
Topic: off grid solar project
Replies: 10
Views: 4903

Re: off grid solar project

Congratulations Externet! I'm glad you went with waaay more than 200 watts solar! Lot less hassle without storage batteries too! I had net metering at my last house, with 4.6 KW of panels, and waited to get a check from the power company. In New York, they "even up" once per year to see what the net...
by jwax
Fri Jul 02, 2021 6:08 pm
Forum: General Discussion
Topic: Trying to find / download a service manual...
Replies: 10
Views: 7715

Re: Trying to find / download a service manual...

cpprioli- You know this thread is 7 years old, right?
by jwax
Fri Jul 02, 2021 5:59 pm
Forum: General Discussion
Topic: How to Explain It...
Replies: 10
Views: 4762

Re: How to Explain It...

Looks like the polarity of the 12 VDC at J2 are reversed.
by jwax
Sat Apr 10, 2021 8:40 am
Forum: General Discussion
Topic: Crappy Headphone wires.......
Replies: 11
Views: 6816

Re: Crappy Headphone wires.......

Would Ethernet cable work? Maybe too rigid?
by jwax
Sat Feb 27, 2021 6:09 pm
Forum: General Discussion
Topic: off grid solar project
Replies: 10
Views: 4903

Re: off grid solar project

Years ago, I lived in Campbell, CA, and there was a "surplus" solar provider near where I lived. https://www.mlsolar.com/ Maybe you've talked with them. They had incredible deals on panels, probably still do. In designing the system, go for way more solar power than you think you'll need. Forget the...
by jwax
Mon Feb 22, 2021 4:09 pm
Forum: General Discussion
Topic: Computer Photo Organizers
Replies: 1
Views: 2917

Computer Photo Organizers

Has anyone had success with USB "PhotoSticks" that portend to allow finding, sorting, and organizing photos on a computer? I'd like software to help eliminate duplicates, and allow me to sort photos by date, time, or maybe even subject. Most of what I've researched are simple memory devices, with li...
by jwax
Sat Feb 20, 2021 4:53 pm
Forum: General Discussion
Topic: Lafayette Stereo-10 Amplifier
Replies: 8
Views: 4296

Re: Lafayette Stereo-10 Amplifier

First guess would be output transistor. Next, an aging volume potentiometer.

Let us know what you find!
by jwax
Mon Feb 01, 2021 11:16 am
Forum: General Discussion
Topic: Shopjimmy
Replies: 13
Views: 5037

Re: Shopjimmy

WOW! Thanks Janitor Tzap! Precious info!
I don't suppose you would sell one of those, if you have any spares?

Appreciate your help!

John
by jwax
Sat Jan 30, 2021 6:28 pm
Forum: General Discussion
Topic: Open door to robots count ?
Replies: 1
Views: 2500

Re: Open door to robots count ?

Some bot on a fishing expedition.
by jwax
Sat Jan 30, 2021 6:26 pm
Forum: General Discussion
Topic: Shopjimmy
Replies: 13
Views: 5037

Re: Shopjimmy

The diode was a 9 volt Zener, so swapped it out, and the capacitor. No joy. Inspection under a heat sink on a 8-pin dip reveals the IC blew a lead right out of the case. Dunno what IC it was, other than, "IC900". Without a part number for "IC900", I have no way to replace it. Suppose I could buy a S...
by jwax
Tue Jan 05, 2021 7:53 am
Forum: General Discussion
Topic: Shopjimmy
Replies: 13
Views: 5037

Re: Shopjimmy

Janitor Tzap- TV Model is Olevia 427-S12, and power supply is DPS-161APE.

Looks like some carbonization on the board around D903, and C903 (100 MFD, 100V), but haven't got the time to dig in deeper.