This shows the circuit symbols for a battery and a bulb ... Bulbs glow and buzzers sound when electricity passes through them. Voltage (V) is the ‘push’ which makes the electricity flow ...

Despite its misleading electrical symbol, think of the TL431 as being ... for instance as a battery’s low-voltage monitor. The TL431 is fine as a switch, but it thrives on feedback.

It's important to note that STAR Protection is only for the 18V LXT line, one of Makita's three battery systems ... there will be a star symbol or a yellow connector — even if the yellow ...