I would like to repeat my request posted here several times: To replace an old diode with a modern one.
But I lack the knowledge to adapt the APC - circuit of an old type like the very common Sharp-LT022MC to a modern diode.
As I wrote before, the company QSI produces laser diodes that could be a good base for repair.
Original designs differed in how anode and cathode of the laser diode and monitor diode are connected together.
QSI offers all variants. Adapter PCBs have to be designed, trivial.
http://qsilaser.com/download/Infra_Red/QL78F8SX_2019.pdf
I also have a batch of Rohm diodes, I think they are RLD-2WNM2
I also have adapter rings from the 9mm housing of the "classical" diodes to the 5.6mm of modern diodes.
So if ManoloMos or ASAMS have a candidate to replace an old type with a modern type, I could donate the parts.
Datasheets of the Sharp and Rohm attached to calculate the APC.
But I lack the knowledge to adapt the APC - circuit of an old type like the very common Sharp-LT022MC to a modern diode.
As I wrote before, the company QSI produces laser diodes that could be a good base for repair.
Original designs differed in how anode and cathode of the laser diode and monitor diode are connected together.
QSI offers all variants. Adapter PCBs have to be designed, trivial.
http://qsilaser.com/download/Infra_Red/QL78F8SX_2019.pdf
I also have a batch of Rohm diodes, I think they are RLD-2WNM2
I also have adapter rings from the 9mm housing of the "classical" diodes to the 5.6mm of modern diodes.
So if ManoloMos or ASAMS have a candidate to replace an old type with a modern type, I could donate the parts.
Datasheets of the Sharp and Rohm attached to calculate the APC.
Attachments
in post #9 under
https://www.diyaudio.com/community/...laser-diode-its-the-lens.385706/#post-7374156
one will find further information
Hello! I have not tried it, but I think it should work? Most likely you will have to apply the APC circuit from a modern diode. By the way, the Chinese from Polida has taken root very well with me. Changed on two drives CDM1.
Hello, please write your phone number in private messages, I am also from Ukraine, I have a few questions regarding KSS-272A
According the attached images of NOS parts it seems to be at least two versions:
1) KSS-272A RP "8-848-244" (older version in white package)
2) KSS-272A RP "8-848-244-II" (successor version in darker package)
In the late 1990s, when the KSS-272A was still readily available (I ordered mostly from Gehado - at those days German's distributor for SONY parts) and there available for low cost (90,- DM).
I only received versions in the dark packaging (MK-II).
What could have been the differences to those in the white package (without MK-II) ?
Maybe in the used laser diodes ?
1) KSS-272A RP "8-848-244" (older version in white package)
2) KSS-272A RP "8-848-244-II" (successor version in darker package)
In the late 1990s, when the KSS-272A was still readily available (I ordered mostly from Gehado - at those days German's distributor for SONY parts) and there available for low cost (90,- DM).
I only received versions in the dark packaging (MK-II).
What could have been the differences to those in the white package (without MK-II) ?
Maybe in the used laser diodes ?
