Search found 4 matches

by rzimpala
Mon Jun 20, 2005 8:10 am
Forum: General Discussion
Topic: AC Motor
Replies: 8
Views: 1686

AC Motor

I have a 120VAC motor that will not start until you give it a little spin. There is an extra lead, is it for a starter cap or something?<p>3_________0 120 (3's represent windings)
3
3
3_________0 120
3
3
3
3___| |__0 unknown? (open to connect cap?)
by rzimpala
Tue May 24, 2005 5:28 am
Forum: General Discussion
Topic: Hex Heverter Relay activation
Replies: 14
Views: 3293

Re: Hex Heverter Relay activation

Thanks Everyone. Currently the input signal to the 555 remains low for approx 59 seconds. At one minute intervals there is a very fast positve (high) pulse. the duration is so short that it cannot be captured on a DVM. However if you connect an LED to the input you can visibly see the quick blink. A...
by rzimpala
Thu May 19, 2005 5:39 am
Forum: General Discussion
Topic: Hex Heverter Relay activation
Replies: 14
Views: 3293

Hex Heverter Relay activation

I'm building a circut using a binary counter, nand gates and a hex iinverter to generate a pulse at one minute intervals. It's based on the 28 LED clock project on the net and obtains clock accuracy via 60 Hz line current. IT works great, an LED pulses onece every minute. The pulse is too short to a...
by rzimpala
Sun Feb 20, 2005 3:58 pm
Forum: General Discussion
Topic: 1 minute repeating timer
Replies: 7
Views: 1489

1 minute repeating timer

I need a simple circuit to generate an approx 500ms pulse every one minute to trigger the minute hands in an old Farady school clock system. The original motor is cooked. I need good acuracy. 24VAC or 24VDC is available. Thinking of using AC for 60Hz time base.<p>Thanks