+------------+----------------o to Xantech +12v
| |
> | E
< 1k |/
> 1k B|
Ocelot |---mwmw----| 2N3906 (PNP)
IR out |/C |\ C
(tip) B| |---mwmw---|>|----o to Xantech input
o---mwmw----| 2N3904 | 470 1N914
2.2k | (NPN) |
|\E >
| < 1k
| >
| |
o------------+------------+----------------o to Xantech common
Ocelot
IR out (ring)