This 1000: 1 voltage-controlled filter circuit was found in an Electronics Today International in a 1980s edition. The circuit is based on components of the time.
This power supply that can supply current according to the LEC is suitable for small projects. The LED...
Common diodes when forward biased present a voltage fall of about 0.6 to 0.7 V. This voltage fall...
This 2003 circuit uses two types of sensors: by reed-switch and by infrared. If the magnetic...