Timeline for Current Amplifier Design
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
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| Jan 29, 2018 at 2:34 | comment | added | Eric33 | Ok thank you for the drawing, turns out that I just need a MOSFET.. The optocoupler was not my part of the design so he said he needed 60mA but turns out we need 10mA... We are just going to drive the optocoupler with the PWM signal current. | |
| Jan 28, 2018 at 6:55 | comment | added | user105652 | +1 for rational thinking. I would add a resistor from base to ground just so base cannot float, or R1 would have to be a very high value. Temp changes will have the beta drift like crazy, but I did mention a servo loop to the OP. Me thinks he will have to work his way up to that level. | |
| Jan 28, 2018 at 4:09 | history | answered | Heath Raftery | CC BY-SA 3.0 |