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 PSU445  with connector 778.106)
Board Connections	Screw terminal blocks
Product Format	Electronic Kit (KT ) only more
Documentation	User Manual