Digital Image Studio wrote: > On 16/08/06, Peter Loveday <[EMAIL PROTECTED]> wrote: > > >> I can't find reference to it in any databook or online resource. Is there >> any other marking, or manufacturer? >> >> Is it possible its a programmable gate array chip of some sort? ULA is a >> common abbreviation for various types of these (Uncommited Logic Array) - >> does it just drive a 5V stepper, or are we talking analogue motor control? >> > > It appears to be some rudimentary form of PWM controller driving an > SCR, inputs are analogue but it currently only runs at a single speed > regardless of input yet it recognizes the tachometer input. If I can't > sort this I'm up for a grand to replace my washing machine :-( > > > Ya got a tough on there- I can't find it either.
It may be custom, or it may just be a few mosfets in a package. Can you tell which pins are ground and power by chance? -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
