Re: Current consumption of LCD kitchen timer?

On 10/05/2025 14:37, Pamela wrote:

I'm interested to know the current drawn by a kitchen LCD digital
timer.
 (1) How much current does the timer draw when counting time?
 (2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
 My guesses are 2mA and 25mA, respectively. Is that about right?

At least 100x too high for the basic clock consumption. According to
<http://www.technoblogy.com/show?19K8>, the average power consumption is about 10µA. It would depend on the clock processor, display and driver, etc, but a few microamps would be typical. It could be even lower - I once had an LCD clock (not a timer) I forgot I had and found it in a drawer still displaying after 20 years (surprisingly with a Toshiba zinc carbon AA battery powering it. From what I remember, the battery voltage, measured with a digital voltmeter, was less than 1V!).

I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM

--
Jeff