I am just setting them up as per the spec sheet.
The 2 OKs I am using at spec are NTE3086 (40-50mA) and PS2501-4 (50mA). These are close to the max current for the led. The electrical characteristics lists a lot lower current rating.Here are the datasheetsNTE3086http://www.datasheetcatalog.org/datasheet/nte/NTE3086.pdfPS2501-4http://www.cel.com/pdf/datasheets/ps2501.pdf
I just remember always hearing a relay snap just before being blinded.
I know you need to stay away from reed relays because on high currents they will wield themselves closed
Omron makes a 5 volt relay that will not act like a transformer