| ??? 06/21/07 03:15 Read: times |
#141115 - Mistake in your circuit! Responding to: ???'s previous message |
Jorge said:
To do that, I thought to use 2 R's to make a resistive divisor an OPAMP for each point. The -80V section will not work! Use a 20k resistor to ground and provide a gain of -5 by the help of another 20k and 100k resistors. I would split the 9M9 resistor into three 3M3 resistors and the 990k resistor into three 330k. Cover these resistors by (neutrally curing) silicon rubber to protect them against dirt, moisture and awkward fingers... Jorge said:
I dont like the idea of not protecting the circuit, but I don't know what to use. Depends on what you intend to protect. The OPamps? Kai |
| Topic | Author | Date |
| high voltage DC with ADC0804 | 01/01/70 00:00 | |
| make sure you use a high voltage resistor | 01/01/70 00:00 | |
| Guard Band, creepage and clearance | 01/01/70 00:00 | |
| Mistake in your circuit! | 01/01/70 00:00 | |
| thanks all of you | 01/01/70 00:00 | |
| Be careful!!! 500V can be deadly!! | 01/01/70 00:00 | |
addendum | 01/01/70 00:00 |