This circuit shows how to make an adaptation on an AM receiver to receive CW and SSB signals. The circuit is from an 80's documentation. The diode is commonly used.
April 2017 - The new Maxim Integrated MAX20733 and 20745 switched regulators are available from...
I found this simple zener diodes voltage divider circuit in an old documentation. The resistor...
In the figure we have a two-stage amplifier circuit showing the voltages at various points. The...