I'm going to document my fun with manipulating laser heads and their power supplies.
I HIGHLY recommend anyone reading this thread do NOT toy with the powers supplies. This documentation is for educational purposes only.
In my case, I aquired several VERY low cost TTL lasers. And I want to conver them all to analog. So, I aquired Chinese analog supplies of various types and have been toying with them. This thread will document my notes and pics as I take them.
Three types of connectors:
#1) The barrel connector. six pins. Pin 6 in the center.
#1 = diode +
#2 = diode -
#3 = TEC +
#4 = TEC -
The barrel connector is for a single diode and a single TEC. IE: Green and red lasers.
Blue lasers require dual TEC's. One TEC for the diode and one TEC for the crystal assembly. This is one reason the blue's are more expensive.
#2) The 9 pin DIN connector.
#1 Diode -
#2 Laser TEC -
#3 crystal TEC -
#4 Diode temp "-"
#5 Crystal temp "-"
#6 Diode +
#7 Laser TEC +
#8 Crystal TEC +
#9 Laser and Crystal temp ground
Next is the pin arrangement for the common 15 pin DIN CNI connector:
#3) The 15 pin DIN connector
#1 = Diode -
#2 = Diode - (paired to compensate for current draw)
#3 = ?
#4 = Crystal temp
#5 = ?
#6 = Crystal temp
#7 = Laser TEC +
#8 = Crystal TEC +
#9 = Diode +
#10 = Diode +
#11 = ?
#12 = Diode temp
#13 = Diode temp
#14 = Laser TEC -
#15 = Crystal TEC -
That's it so far. I'm going to fuse a 100mw CNI laser into a Chinese analog dual TEC controller. IE: 15pin to 9 pin. I'll document how it goes.