Based on the Linear Technology LTC2054, this -48 V circuit was found in a 2005 manual. The circuit is powered with 5 V and can be used as a shield.
Figure bellow shows a ring oscillator using five inverters of a 4049. [The circuit operates only...
This circuit, which can also be used with flashing LEDs as long as they have in parallel a charge...
June 2017 - The new TE Connectivity FSJMI series of illuminated tactiles switches is now available in Mouser...