Search found 3 matches

by K8YS
Mon Jan 28, 2002 4:09 pm
Forum: General Discussion
Topic: Test Equipment Schematic needed
Replies: 3
Views: 1861

Re: Test Equipment Schematic needed

TNX EDD!
That is exactly what I was looking for!
73 OM
Bob
by K8YS
Sun Jan 27, 2002 6:55 pm
Forum: General Discussion
Topic: Test Equipment Schematic needed
Replies: 3
Views: 1861

Test Equipment Schematic needed

MANY MANY years ago (25+!), I found a schematic for building an octopus... OK, so what is it? The octopus is a device that connects to an oscilloscope V and H inputs and displays a pattern on the scope. The pattern shows if the device under test is capacitive, inductive, resistive or is a PN junctio...
by K8YS
Sun Jan 27, 2002 6:47 pm
Forum: General Discussion
Topic: Desktop PC plugged into a car battery!
Replies: 7
Views: 2172

Re: Desktop PC plugged into a car battery!

Your desktop computer uses a switching power supply, and a switching supply does not care if you feed it sine wave or pulsating dc.
I run a desktop on a UPS that used a 12v cell. Check the UPS before you look for a dead one, as many are 24 or 48v and not 12v.
Bob