1 Hz or 1 PPS Crystal Clock Base
The CD4020BC, CD4060BC are 14-stage ripple carry binary counters, and the CD4040BC is a 12-stage ripple carry binary counter. The counters are advanced one count on the negative transition of each clock pulse. The...
Tagged: Timers-Counters
Multiplexed Presettable Timer with ICM7217
This was a attempt to make a Sequential Timer with ICM7217 of Intersil, even though it worked well, it was not developed beyond the prototype stage or first iteration. Only when a product is...
Analog Blind Dial On Delay Timer
It is called analog dial timer as it has no digital display, but the chip is digital it is CD4541. It is Mains operated, you could make on-delay or off-delay. By changing the caps...
Two Stage Sequential Timer
This is an example of a cascaded or sequential timer, here two CD4541 are forming a two stage timer. You can add more in a chain, but better to use a microprocessor or Microcontroller...
Timer and Counter Modules
U1 CD4541 is a Timer with Long Duration Ability. This timer is started by a low pulse from earlier circuit, when the temperature goes above setpoint, a low state is at U2A inputs, this...
Decade Digital Counter Module – LED and LCD
I’m looking for a source of decade counters and wonder if you can help? I don’t want to build the counter, I want to buy a functioning counter module. Do you have source suggestions?...
Some Cyclic Timer Ideas
A product spec and need from my email archive. This indicates how clarity in customer specs can help him get a working solution with less wastage of time and money.
