HP97 The journey begins
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10-23-2021, 01:01 AM
(This post was last modified: 10-23-2021 01:03 AM by teenix.)
Post: #470
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RE: HP97 The journey begins
Hi all,
The 97 boards have been manufactured, should be here early next week. Meanwhile, I have been playing with circuitry for the sense head writes. The attached image shows the normal signals at the head at top, and the lower is what I created from a mock up. The first pulse has a smaller amplitude than the others for some reason. This will probably be a problem for the first data bit not recording properly on the card. The rest of them are a bit higher in amplitude, but it looks the part so far. Unfortunately, I am about out of my allocation of storage space on the Forum again, so I am going to have to start deleting more stuff to make room. I could be cheeky and reinvent myself and keep going in a different guise I suppose ;-) cheers Tony |
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