3085 - Three-In-One Timer circuits

This is really three kits in one. In fact it comprises one each of our timer boards 3152, 3085_2 and 3085_3.

Each one is supplied complete with all components and a separate PCB. Each has a relay output (except 3085_3 which has a 12Vdc output). So you can either purchase all three timers in the one pack (order code 3085) or individually (see 3152, 3085_2 and 3085_3 for details).

The first circuit is a traditional 555 timer circuit but also shows how to extend the timing period to the maximum. The second uses a 555 timer IC to switch a binary counter for time periods from seconds to years! The third circuit uses an electrolytic capacitor's discharge characteristics to time a period from about 2 seconds to 6 minutes.

Timing periods for all three circuits can be altered by substituting different component values (not supplied). Please refer to the individual kits for full product descriptions.

This three-in-one kit makes a good introduction to timer circuits. Full details are provided.

Technical Specifications
Supply Voltage	Regulated 12Vdc (Order Code PSU446 with connector 778.106)
Board Connections	Screw terminal blocks
Product Format	SELF-ASSEMBLY Electronic Kit (KT ) only more
Documentation	User Manual