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Smart kit

1. Smart Kit

1. Alarms - Sirens
2. Amplifier
3. Automation
4. Cars And Bikes
5. Computer Application
6. Converters - Chargers
7. Dimmers
8. Instruments
9. Light Modulators
10. Linears - Encoders
11. Music
12. Power Supplies
13. Preamplifiers Mixers
14. Receivers
15. Sound
16. Sound Effects
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18. Timers Counters
19. Transmitters
20. Various
21. Vu - Meters

--- Παρόμοια ΚΙΤ ...
1020 0-5 MIN TIME SWITCH
1118 TIME SWITCH TRIAC 0-10 MIN
1121 GIANT DIGITAL CLOCK
1163 DOUBLE TIMER-SWITCH
1165 1 TO 6 MIN.SUPERTIMER
1172 UP-DOWN COUNTER
1178 PRECISION TIMER 1-256 MIN
1180 24H CLOCK/TIME SWITCH TWO OUTPUTS
1183 DIGITAL COUNTER WITH 3 DISPLAYS
. ..

1173

DIGITAL DOWN TIMER 99 MIN WITH PIC

SCHEMATIC

A simple and useful circuit that will help you in accurate time countdown.The circuit is based on the PIC16C54 to ensure accuracy and reliability. It is easily programmable from 99 - 0 minutes for down counting and when it reaches point zero, it activates a relay. Ideal for use in automatic machines and in programmable time counting in general, and has the capability of backup. The unit is consisting from two different PCB boards, one for the control unit and the second for the display panel. Consumption 220mA max. V 12 VDC P.S. 1061 PCB a: 40x93mm b: 80x93mm