This circuit for analog TV was found in a 90s EDN. The integrated circuits used are from that time and may present some difficulty in obtaining.
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...