[1761] Big Muff Calculator

Date: March 18th, 2015 | Comments : [3] | Categories: DIY.

Big Muff schematicThis calculator is used to determine resistor values for the basic shunt feedback transistor circuit to set the proper DC operating point.

Very useful in converting BMP gain stages to use germanium transistors.

Go to the Lab Notebook and try it out.


3 Responses to “Big Muff Calculator”

[745049] Bradford Says: 5:00 pm, October 7th, 2015

Does this Big Muff calculator work for proper biasing of the reverse power booster? Can I plug in the values from the reverse power booster page and just aim for 4.5 in the Ve column?

[745576] admin Says: 7:00 am, October 9th, 2015

It should work if you know the reverse hfe of your transistor, which might be the problem. Reverse boosters are probably better suited for breadboarding.


[747822] Bradford Says: 3:21 pm, October 14th, 2015

Ahh thanks so much!!! I’ve been trying this out with some 2n5088, 2n5089, and MPSA05 and have gotten some pretty excellent results using your reverse booster topology.


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