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Who can help me with IBM (Netherlands) made LX42 printer scematics? THNX in advance!

Hi, Can anyone help me with the dimensions of the B type tapers? Drill chuks use this type (fe B22, B18, B16 etc). I want to design an dadapter to that. the only I know is the number after the B is the bigger (major) diameter of the cone in mm. At B22 fe it is 22mm. I know there are adapters from B taper upto Morse tapers, But I need at least the cone angle if anybody can help. thnx

Hi All, Who can advise me a simple circuit for 3phase (variable freq) control? I am looking for a circuit what gives me 3 outputs (120-120deg shifted). The uotputs can be ttl or any pulse (at zero crossing fe) and the input can be an external pulse (clock) source or any control signal determining the frequency. I think there can be an IC or set (but not microcontroller solution!) I hope some of you can help!TIA (thnx in advance)

Hi All, Who can advise me a simple circuit for 3phase (variable freq) control? I am looking for a circuit what gives me 3 outputs (120-120deg shifted). The uotputs can be ttl or any pulse (at zero crossing fe) and the input can be an external pulse (clock) source or any control signal determining the frequency. I think there can be an IC or set (but not microcontroller solution!) I hope some of you can help!TIA (thnx in advance)

Does any one knows any ideas (sw-hw) how can I get three phase controll signals direct (3bits) or alternate (6bits) to controll FETs or bridges throug an LPT port of a PC. I am going to use it to drive motors with variable frequencies. thnx.