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Thread: Repost: PV OptoIsolator / MOS Driver Info
www.piclist.com/techref/index.htm?key=optoisolator+mos
face picon face BY : Bob Axtell email (remove spam text)



Alan B. Pearce wrote:
>> My post of yesterday never showed up. Here it is again:
>>    
>
> It showed in my mail, 'cause I went looking for the device you quoted.
>
>  
>> While its spec says "min 7VDC" of output, it actually
>> delivers quite a bit more; I needed a 220K load resistor to
>> speed up on/off times and to prevent overdriving my power
>> FETs.
>>    
>
> What speed do you actually achieve, because the app-notes I found by them
> regarding these seemed to figure on quite long switching times, and they
> didn't seem to quote a different time for the ones with internal resistor.
>
>  
And I was never able to make it go faster than about 100Hz as a result;
my 220K sped it up only a little.
But what I plan to do is to simply use this as a power supply; I will
beef up the supply with a low-leak
capacitor, then switch it at high speed with a fast optoisolator. HP
makes some fast components like
this.

--Bob
<4762FA04.3020809@cotse.net> 7bit

In reply to: <04ce01c83e68$4e06f9a0$1979f682@space.rl.ac.uk>
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Subject (change) Repost: PV OptoIsolator / MOS Driver Info

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