{"id":274,"date":"2024-05-09T12:49:50","date_gmt":"2024-05-09T12:49:50","guid":{"rendered":"https:\/\/wp.sheepchen.net\/?p=274"},"modified":"2024-06-08T16:48:58","modified_gmt":"2024-06-08T16:48:58","slug":"sony-mz-n707-md-player-rework-so-it-doesnt-need-batteries-when-recording","status":"publish","type":"post","link":"https:\/\/wp.sheepchen.net\/?p=274","title":{"rendered":"Sony MZ-N707 (MD-Player) rework so it doesn’t need batteries when recording"},"content":{"rendered":"\n

Disclaimer: <\/strong>Version 1 does not work! Version 2 is the ‘good’ one.
for record sessions over 1 minute the AMS1117 regulator gets to hot and shuts off.
—<\/p>\n\n\n\n

The Problem<\/h2>\n\n\n\n

If you want to record an MD with the Sony MZ-N707 you have to plug in the mini usb cable and<\/strong> have an AA-battery inside of it. I reworked the player, so it takes the power from the USB and converts it to 1.5V to mimic a fully chared battery.<\/p>\n\n\n\n

I decided on 1.5V instead of 1.2V (more headrum if the voltage spikes) because the motor in the player can draw 220mAh for a few seconds even @1.5V. Do reduce the strain on the thin wires I used I opted for the upper end of the Voltage-curve.<\/p>\n\n\n\n

Version 1: off the shelf Voltage regulator (not good)<\/h2>\n\n\n\n

Here is what I used:<\/p>\n\n\n\n