[mikewest]

Can anybody please help.

I'm about to referbish a B&K precision sound level meter/analyser.

I have circuit details but need to source some spare op amps

The AD 3259 is what I need but I've had no luck in finding any or even
data sheets.

Can anybody help please.

Contact me through my website

Thanks

mike
www.mikewestgatesound.co.nz

[Richard Crowley]

"mikewest" wrote ...
Can anybody please help.

I'm about to referbish a B&K precision sound level meter/analyser.

I have circuit details but need to source some spare op amps

The AD 3259 is what I need but I've had no luck in finding any or even
data sheets.

Can anybody help please.

Contact me through my website

Thanks

mike
www.mikewestgatesound.co.nz

A few places in HongKong claim to still have some according
to a simple Google search.

OTOH, if they are that old you'd likely have a hard time trying to
find a modern replacement that wasn't better in nearly every spec.

[mikewest]

Thanks Richard.

I've contacted a lot of suppliers in the US with no positives.

I've just signed up to a supply sight in HK and placed an
enquiry/order.

I'm sure there are more modern op amps but without any data sheets
it's not straight forward to guess an appropriate replacement.

Regards

Mike

[Richard Crowley]

"mikewest" wrote ...
Thanks Richard.

I've contacted a lot of suppliers in the US with no positives.

I've just signed up to a supply sight in HK and placed an
enquiry/order.

I'm sure there are more modern op amps but without any data sheets
it's not straight forward to guess an appropriate replacement.

Do you have the schematic of the equipment?
Op-amps are relatively simple and straightforward
devices with standardized inputs and outputs. A
quick look at the circuit topology will reveal which
are the + and - inputs and the output, etc.

[mikewest]

Many thanks Richard

I managed to convince B&K to send me the circuit diagram

Regards

Mike

[Trevor Wilson]

"mikewest" wrote in message
ups.com...
Thanks Richard.

I've contacted a lot of suppliers in the US with no positives.

I've just signed up to a supply sight in HK and placed an
enquiry/order.

I'm sure there are more modern op amps but without any data sheets
it's not straight forward to guess an appropriate replacement.

**Sometimes. However, I've caught out a few times. I've found OP amps which
are very low power, or have some other peculiar characteristics, which are
difficult to substitute for. Always best to have ALL the data first.


--
Trevor Wilson
www.rageaudio.com.au



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