Multimeter seems to not be able to read mpsa13's

[nightendday]

What gives? it works fine with my lower gain transistors, but will not give me any reading on my mpsa13's

[Seljer]

Its a darlington transistor, its two transistors piggybacked onto each other. It probably goes way over the scale of the hfe measurement circuitry in your multimeter. The data sheets list the minimum gain for the MPSA13 as 5000!

[nightendday]

Its a darlington transistor, its two transistors piggybacked onto each other. It probably goes way over the scale of the hfe measurement circuitry in your multimeter. The data sheets list the minimum gain for the MPSA13 as 5000!

So is it impossible then to get an accurate reading and bias a fuzz face correctly using the mpsa13?

[Kesh]

you can set up a circuit and take some values of base and collector current to test hfe

http://www.st-andrews.ac.uk/~jcgl/Scots_Guide/experiment/lab/expt4/expt4.html

also, tell me more about a fuzz face with a darlington, sounds bonkers.

[nightendday]

you can set up a circuit and take some values of base and collector current to test hfe

http://www.st-andrews.ac.uk/~jcgl/Scots_Guide/experiment/lab/expt4/expt4.html

also, tell me more about a fuzz face with a darlington, sounds bonkers.

Basically, I want to run dual mpsa13. I'm assuming, since my breadboard isnt here yet, that i'll end up with near square wave clipping..  I'll be running extra filtering (under 400pf) on each to try and keep noise down.. with extra filtering on the power supply as well. I'm also going to bump the output cap to .1, and have the input cap variable from the stock .022 to .1.