This solar powered circuit was found in a 1991 documentation. The transistor is a general purpose NPN.
August 2017 - The new LZ400UB00 ultraviolet LEDs from Engin LEDs with wavelengths of 385 -410 nm...
This is one of many possible configurations for this type of oscillator that generates sinusoidal...
Here we show how to add a reset key to the monostable using two NAND gates (CB127E). When the key...