04/06/2026
As much as I love the romance of using a crystal oscillator in an erase head bias generator, I just don’t think it’s gonna cut it compared to the #555. Highest frequency crystal I could easily get was only 38kHz, which is about half of what it needs. The 555 IC gets ~1% of the ideal 100kHz. Well, I limped through another step in the prototyping of the magnetic thingy-ma-bob, I’m calling “Vicious Cycle”.