Ian Liston-Smith wrote:
I'd like to build a tone control circuit using the LF353 dual op amp.
The circuit has bass, mid range and treble adjustments.
The problem:
The circuit (see
http://www.ece.ucsb.edu/courses/ECE0...remi/lf353.pdf
circuit on page 7) uses dual voltage rails of +15 and -15 volts,
though for line input levels, this will probably work down to +8 and
-8 volts. But I want to run it from a single +12 volt supply.
Usually, two 100k resistors across the supply,
What is magical about 100k?