Using two 741 operational amplifiers, this low-pass circuit has a cutoff frequency of 10 kHz. We found it in an article in the magazine Electronics Now from August 1993.
This circuit was obtained from a 1978 Practical Wireless. It causes an LED to flash at a frequency that...
April 2017 - Mouser Electgronics offers a wide range of wireless charging solutions for IoT and...
This circuit is from an 80's publication. It makes use of small 6 V x 50 mA incandescent lamps....