This circuit uses an 18 MHz crystal to generate 36 MHz signals. We found it in an 80's documentation. The circuit has an input for frequency modulation.
This is a traditional configuration that we find in many technical publications from all ages. It is a...
The sensor for this alarm is an LDR and it consists of an oscillator that goes into action when...
PIC18F “K40” Features Intelligent ADC with Filtering and Signal Analysis Capabilities Ideal for...