voltage out after light break

M

Mitch

Guest
Please help if you can
Simply i want to build a small circuit that does this.
using solar panal as light receiver,
when light source is cut off i want the circuit to send 9 or so volts to a
buzzer, and not stop buzzing until circuit is reset.
any baic electronic sites that might have this?
TIA
 
Use a CdS cell for your light reception, cheaper and smaller

Paul
 

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