This circuit is from a 60's documentation. The circuit uses components from the era and serves to monitor a 150V continuous power line.
This solar cell driven circuit makes 4 LEDs run at a speed given by capacitor C2. The circuit is...
The time obtained in this circuit, from a 1978 publication, depends on R3 and C. R3 can have...
The duty cycle of a Schmitt Oscillator can be programmed by R1 and R2 in this circuit. The...