| ??? 04/20/10 04:59 Read: times |
#175144 - high current output SSR or opto |
Hi all,
I am trying to locate a TTL control (up to 50mA control current) solid state relay with a continuous load rating of at least 4 amps at 12VDC. It needs to be able to chop a nice square wave at speeds up to 300 Hz and shouldn't cost an arm and a leg. I have located the SSR's to do it but at $39 each times two, they are not a cheap solution. I am far from an expert but I was initially thinking of using a 4N25 and an OPA541 high power op amp but the rub is that it needs to be normally closed for this application and the price is a little steep... Any thoughts on how to do this cheaper? Your advice is greatly appreciated. Brian |
| Topic | Author | Date |
| high current output SSR or opto | 01/01/70 00:00 | |
| Something like this perhaps? | 01/01/70 00:00 | |
| thank you | 01/01/70 00:00 | |
| Use due care... | 01/01/70 00:00 | |
| expansion | 01/01/70 00:00 | |
| Depends | 01/01/70 00:00 | |
| I agree | 01/01/70 00:00 | |
| Bleh! | 01/01/70 00:00 | |
| I caught that... | 01/01/70 00:00 | |
| half voltage | 01/01/70 00:00 | |
| why load is there | 01/01/70 00:00 | |
| Check These Items | 01/01/70 00:00 | |
| Load Placement | 01/01/70 00:00 | |
| Load placement | 01/01/70 00:00 | |
| thank you everyone | 01/01/70 00:00 | |
| 3 ohm load | 01/01/70 00:00 | |
| good advice | 01/01/70 00:00 | |
| If I understood your requiremnt properly have a look ULN2003 | 01/01/70 00:00 | |
I don't think so | 01/01/70 00:00 |