1980 Maplin catalogue wanted.

[nigelwright7557]

I bought a couple a year or so back with output transistors missing.
So I bought in new output transistors, fitted them and the amp oscillated quite badly.
I tested the transistors and they had a much higher gain than original spec.
I had to increase the VAS capacitor a little to stop the oscillation.

 

[nigelwright7557]

Well as they were free to me if you can give them a good home you can have them and gain me brownie points!

Yes I will get them working again.
Let me know what is costs for p+p and I will pay you via paypal if thats ok.
Nigel Wright
49 Cresswell Avenue
Carlisle CA1 3RL
Cumbria.

 

[billshurv]

I'll PM you some pictures later. I also have a couple of the 50W boards as well.

 

[nigelwright7557]

I'll PM you some pictures later. I also have a couple of the 50W boards as well.

OK thanks.

 

[billshurv]

email sent to your murtonpike address.

 

[twastard]

Hi lads. what are BB20Ws ? Im assuming a lateral mosfet driven amp but im only guessing. cheers

 

[twastard]

sorry the link took me to p2

 

[nigelwright7557]

Hi lads. what are BB20Ws ? Im assuming a lateral mosfet driven amp but im only guessing. cheers

bb20w is a Maplin product code.

 

[twastard]

ah right, cheers Nigel.