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Feature #54

closed

pull-up resistors on PWM opto out signals

Added by peter about 12 years ago. Updated about 12 years ago.

Status:
Rejected
Priority:
Normal
Assignee:
-
Category:
Auxiliary Electronics
Target version:
-
Start date:
2012-10-01
Due date:
% Done:

10%

Estimated time:

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.

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 #1

Updated by jaap about 12 years ago

  • 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?

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 #2

Updated by jaap about 12 years ago

  • 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.

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 #3

Updated by peter about 12 years ago

  • Status changed from New to Rejected
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