Feature #54
closed
pull-up resistors on PWM opto out signals
Added by peter about 12 years ago.
Updated almost 12 years ago.
Category:
Auxiliary Electronics
Description
Depending on the laser power supply, it may be needed to pull-up the PWM signal to +5V (e.g. 1kOhm)
as there is a too-weak pullup in the laser power supply. The weak pull up will lead to non-linear power response
to PWM dutycycle.
Provide schematics for the connection of the laser power supply.
- Tracker changed from Bug to Feature
- Category set to Mainboard
- Target version set to Laos Mainboard Rev4
- % Done changed from 0 to 10
Op het board betekent dit dan dat er een mogelijkheid moet komen om een 1K weerstand naar +5V te plaatsen tussen de OPTO-coupler en de connector.
Is dat wat je bedoelt?
En dan maar meteen voor alle vier de OPTO-outs?
- Category changed from Mainboard to Auxiliary Electronics
- Target version deleted (
Laos Mainboard Rev4)
After discussion with Peter: This is not a Mainboard issue after all: Pull-Up should be between the Power Supplies Own +5V and the PWM input.
- Status changed from New to Rejected
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