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TI's OPAMPPRO,Lighning detection and an ADC

D

Douglas Eagleson

Jan 1, 1970
0
I am trying to make a lightning detection circuit. And have a nice
detector front and it needs to be matched to an ADC on a Zilog Z8
encore mpu.

The front end is +/-15Volts. And the ADC is a 0-3v affair.

It works so good I am afraid to alter the detector main opamp. I was
wondering if TI's OPAMPPRO computer design program would be useful in
this endeavor.

I am a novice trying to learn the Z8 and its ADC. I tried a 0-5 volt
opamp- LM325 as the interface and lost alot of sensitivity.

Any ideas.. Thanks in advance.

I am investigating the rise time characteristics of the static Em
field for a lightning bolt. IT might have some directionality?
Aleviating the need for orthoganal magnetic coils to detect bolt
direction?
 
R

Rich Grise

Jan 1, 1970
0
I am trying to make a lightning detection circuit. And have a nice
detector front and it needs to be matched to an ADC on a Zilog Z8
encore mpu.

The front end is +/-15Volts. And the ADC is a 0-3v affair.

It works so good I am afraid to alter the detector main opamp. I was
wondering if TI's OPAMPPRO computer design program would be useful in
this endeavor.

I am a novice trying to learn the Z8 and its ADC. I tried a 0-5 volt
opamp- LM325 as the interface and lost alot of sensitivity.

Any ideas.. Thanks in advance.

I am investigating the rise time characteristics of the static Em
field for a lightning bolt. IT might have some directionality?
Aleviating the need for orthoganal magnetic coils to detect bolt
direction?

I saw one of these about a millennium or so ago - they used two hula-hoop
sized loops at 90 degrees to each other, to go to the X and Y axes of a
'scope, and a third, vertical antenna, which went to the Z axis
(intensity) input. The drawback was that the length of the trace was
inversely proportional to the distance/power of the strike.

Have Fun!
Rich
 
D

Douglas Eagleson

Jan 1, 1970
0
I saw one of these about a millennium or so ago - they used two hula-hoop
sized loops at 90 degrees to each other, to go to the X and Y axes of a
'scope, and a third, vertical antenna, which went to the Z axis
(intensity) input. The drawback was that the length of the trace was
inversely proportional to the distance/power of the strike.

Have Fun!
Rich- Hide quoted text -

- Show quoted text -

Yeah, all the various methods of handling the signal have been tried
likely.

I was going to use only the signal rise time to eliminate the long
tail effect.

Maybe I won't need the coils!
 
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