Light Alarm Kit
A sensitive photo Darlington transistor is used with a CMOS nand gate.
The circuit detects light and triggers a siren. You could add your own triac or relay and
switch practically anything. The kit uses the MAL12 Darlington super alpha
phototransistor, typically about ten times more sensitive than a normal phototransistor.
The circuit usage includes burglar alarms, medicine cabinet alarm, automobile trunk alarm
etc.
Specifications:
See
CK1000.pdf for complete
details, including schematic and theory of operation. Requires
Adobe Acrobat Reader available at
www.adobe.com
for FREE!
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