This is an LED driver which is designed to provide a fast current pulse, adjustable from about 0-70mA and 0-50ns with fast (sub-ns) risetime to drive an LED.
The pulser is composed of two separate units. A control box mounted in an aluminum enclosure accepts an input trigger pulse, and provides adjustments for output current and pulse width. A small driver board which drives the LED is connected by two cables (one BNC and one RJ-45 network-type cable) to the control unit. The driver PCB would typically be mounted inside a dark box with a photo-detector.
Updated Documentation Feb 2013
- User Manual
- Control Box
Current inventory
Link to google spreadsheet of current inventory GoogleDoc
Sets Shipped
The following complete sets were shipped on 10/5/2011:
- Set1: LED Pulser #4; LED Pulse Generator #4; Box #4; Power Supply; RJ45 Cable; BNC Cable
- Set2: LED Pulser #2; LED Pulse Generator #3; Box #3; Power Supply, RJ45 Cable; BNC Cable
Version 2.1
Design slightly revised; juxtapose R8 and R9 on the LED Driver Board and replace R13 with 820 ohm in parallel with 10k ohm – ExpressPCB
Design revised; removed R14 – ExpressPCB
Version 2
Design revised in April 2011. This version is essentially the same as Version 1 but with ECOs taken care of.
LED Driver Board ==
- Bill of Materials – Google Doc
XLS backup • Assembly Pro Forma
- Schematic – ExpressPCB
- PCB Layout –
Pulse Generator Board ==
- Bill of Materials – Google Doc
XLS backup (this file is named wrong!) • Assembly Pro Forma
- Schematic – ExpressPCB
- PCB Layout – ExpressPCB
Or see the Design Files
LEDs
The following P/N high-brightness blue LEDs have been suggested: L53NBC, L7113NBC, NSPB500S, NSPB300S. (We have not yet tested any of these).
Version 1
See some photos
Pulse Generator Board
- ExpressPCB design files – Schematic • PCB Layout
- Documentation files – Schematic (pdf) • BOM (csv) • BOM (ods)
- An ECO needs to be created for this board (11-12-09)
LED Driver Board
- ExpressPCB LED Driver Board – Schematic • PCB Layout • BOM (ods)
- Documentation files – Schematic (pdf)
Enclosure
The LED Pulser Driver PCB will be housed in a Front Panel Express Enclosure. See: side profile 2
