This circuit appears elsewhere in this section, obtained from other documentation. The circuit is for lead-acid batteries and the lamp can be replaced by high brightness LEDs.
This configuration is from a 1964 US documentation valid for any FET. The range of power voltages...
Only the right combination of the positions of the 6 rotary switches of 1 pole x 10 positions of...
Another of the many anti-bounce circuits that we have in this section of our website. This one...