MrDEB
Well-Known Member
been trying to locate a CDS cell for a darkness activated switch.
looks like phototransistors are readly available.
can one just substitute a phototransistor for a CDS cell
looking at the right hand schematic for dark activated switch.
**broken link removed**
found lots of circuits using compators, op amps etc.
looks like phototransistors are readly available.
can one just substitute a phototransistor for a CDS cell
looking at the right hand schematic for dark activated switch.
**broken link removed**
found lots of circuits using compators, op amps etc.