Go Down

Topic: Zener Diode affecting Voltage divider (Read 2696 times) previous topic - next topic

cjdelphi


The resistor values are too high, they are being affected by the current that the zener is taking close to the knee. Drop them from 20K to 200R and 10K to 100R.


what about 20k down to 2k
and
10k down to 1k?

Or would that have no impact on how this circuit behaves?

Grumpy_Mike

Quote
what about 20k down to 2k
and
10k down to 1k?

The lower you have the resistors the less affect the load from the zener has on the potential divider. So dropping them to that value will improve matters. You never know it might even cure it.

Go Up
 


Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

Arduino
via Egeo 16
Torino, 10131
Italy