Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Register Log in
  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

timer circuit

Status
Not open for further replies.
V

vernon2009

New Member
I want a timer which is off for 14 days and "on" for 3 seconds. Can any one give me a circuit diagram? Can this be done with 555 timer?
 
14 days off is not possible using an NE555. Even using the CMOS-versions (TLC5555) you can get a max delay of appoximately 3 minutes.

A possibility might be using an MCU and a RTC (real time clock).

Boncuk
 
Status
Not open for further replies.

Similar threads

W
  • Question
'Simple' Timer circuit.
Replies
11
Views
2K
WoodMiller
W
Z
Timer on/off delay
Replies
14
Views
3K
Zool
Z
T
  • Question
switch circuit
Replies
13
Views
2K
ZipZapOuch
ZipZapOuch
M
  • Question
Battery management circuit
Replies
2
Views
925
rjenkinsgb
rjenkinsgb
I
  • Question
555 Delay On Circuit
2
Replies
33
Views
4K
iAmGrizzly
I

Latest threads

New Articles From Microcontroller Tips

Back
Top