Scratch is the scratching noise that occurs mainly with old records. This high frequency noise is eliminated by the filter found in the February 1990 issue of Radio Electronics magazine.
May 2017 - Mouser Electronics already has for sale the new Littelfuse SP2555NUTG diode arrays for...
The frequency of TTL square signal is divide by 5 with this circuit. Power supply is 5 V and the...
This dimmer for high-powered incandescent lamps was found in a 1967 General Electric manual. The...