| | List |
| Subject: | Re: High Voltage OP AMP needed |
| Poster: | Ban |
| Date: | Fri, 23 Mar 2007 15:54:03 +0100 |
| Related Postings: | 1 2 3 |
Casper Budtz-Jorgensen wrote:
> Im looking for an OPAMP which can deliver +/- 60 V (120 V nom) or more
> in the 1 kHz range. No significant current throughput is needed. Does
> anyone know of a manufacturer? The best I can find at TI.com is +/-
> 45V.
> If they are not to be had, how does one go about creating a 1 kHz +/-
> 60V sawtooth signal?
>
An opamp can not create a sawtooth and it would need a much larger bandwidth
than the repetition frequency.
Make a current source charge a capacitor, (optionally buffer it with a
complimentary emitter follower for higher current capability), and trigger a
thyristor to the negative rail when the desired voltage is reached. cheap
and simple.
--
ciao Ban
Apricale, Italy
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