Subject: RE: solid state relays
Author: Tom Bowes
Date: Feb 7, 2002, 5:57 PM
Post ID: 1709591868
John,
The main problem that you will have with these solid state relays is
that most of them are made to control alternating current and not direct
current. Yes, they use DC as a control voltage, but the controlled
voltage must be AC. This is because they use a triac to do the
switching, but when hooked up to DC the triac functions as an SCR and
will latch on, even if you remove the control voltage. There are some
that will go DC-DC, but I don't have much experience with them.
John Boettcher wrote:
| Ok, as long as I'm on a roll here. Has anyone tried a solid state relay to fire the ignition coil using the points to trigger the relay? I figure it would eliminate any arcing whatsoever in the points. Where I work we have ss relays that trigger with 0-32vdc and with only milliamps as a load. It can switch a 25amp load. So 12vdc to the + side of the trigger and the - side to the points. - side of ignition coil to one side of the ss switch and the other side of the switch grounded. My only concern is if a solid state relay will collapse the ign. coil fast enough for the spark. JB (Weld) |
Tom
'70 (July '69) Ambassador
'82 V50-III
Shelby Township, Michigan