| Alan Dorman 01/13/10 04:32 Read: 221 times Las Vegas USA |
#172422 - five volts controlling a hundred Responding to: Stefan Kanev's previous message |
The circuit is powered with a 12 VDC regulated supply and the triacs switch a little over 200 VAC at 400Hz to light some EL pieces. The EL inverter is powered by the 12 VDC source, the MCU is powered via a 5V regulator. MT1 of the triac connects to logic (and 12 V) ground and MT2 of the triac is connected to the EL piece. The gate of the triac is connected through a 620 Ohm resistor to the port pin of the MCU.
I would hate to waste the customer's time building a prototype to test this out and end up blowing a couple of MCU chips when I was hoping someone here had already tried it and can give me a thumbs up or down. |
| Topic | Author | Date |
| driving a triac with a ATMEL MCU | Alan Dorman | 01/12/10 23:58 |
| pull-up or other chip? | Per Westermark | 01/13/10 00:14 |
| probably | Stefan KAnev | 01/13/10 01:25 |
| five volts controlling a hundred | Alan Dorman | 01/13/10 04:32 |
| so i answered | Stefan KAnev | 01/13/10 04:52 |
| Throwing out the baby? | Andy Neil | 01/13/10 01:36 |
| previous | Alan Dorman | 01/13/10 04:22 |
| they need freelancers? | Stefan KAnev | 01/13/10 04:28 |
| I see | Andy Neil | 01/13/10 05:21 |
| Yep | Alan Dorman | 01/13/10 11:31 |
| don't forget about "triac drivers" | Richard Erlacher | 01/13/10 08:09 |
| my prefered way | Alan Dorman | 01/13/10 11:37 |
| Do always use a buffer! | Kai Klaas | 01/13/10 08:54 |
| there is an old Philips appnote which ... | Erik Malund | 01/13/10 09:12 |
| incredible | Stefan KAnev | 01/13/10 09:46 |
Thanks! | Alan Dorman | 01/13/10 11:43 |