| The majority of hand-held digital volt meters use an LCD screen and are powered from a nine volt battery. Inside is most probably an ICL7106...
| The majority of hand-held digital volt meters use an LCD screen and are powered from a nine volt battery. Inside is most probably an ICL7106...
| Weller/Cooper Tools Group's ‘Magnastat’ have a good reputation for reliability and the circuit suggested here is an add-on indicator lam...