This circuit, based on a 555, was found in a Popular Electronics from the 90s. The circuit has the frequency determined by R1, R2 and C1.
In this circuit we have the way to use common diodes to obtain low regulated voltages in a single...
This circuit is from a 2005 Linear Technology manual. The circuit uses an LT6700-3 and has an...
The crystal frequency of this circuit found in an American documentation is limited only by the...