This decorative circuit was found in the July 1994 issue of Electronics Now magazine. It makes LEDs blink in a face-shaped allegory. The frequencies are given by the capacitors in the oscillators.
MCP19124/5 Contains Independent Voltage and Current Control Loops Plus a Full Suite of...
This traditional timer setting can provide time intervals up to a few tens of minutes. The...
In the figure we have an inductance bridge for values between 1 and 30 uH at a frequency of 5 MHz....