This circuit also appears elsewhere on this site, obtained from other sources. This is an 80's American schematic book. Instead the lamp can be used white high-brightness LEDs.
We can use high value electrolytic capacitors in alternating current circuits with the...
July 2017 - Texas Instruments' new 3 A bq25601 single cell battery charger can be found on Mouser...
The figure shows how to use an oscilloscope for diode test. The circuit presents the...