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1. 🇳🇴 Thor — backup account (thorthenorseman@octodon.social)'s status on Monday, 10-Sep-2018 16:33:10 EDT 🇳🇴 Thor — backup account

   I'm still fighting uphill with transistors, be it BJTs or FETs. They never do what I expect them to. My attempts at making a simple circuit that smoothly ramps up a supply voltage in something like 100 milliseconds have so far been a failure. N-channel MOSFETs that ramp up the ground current are the closest I've gotten, but I want it to be P-channel MOSFET on the positive rail, since switching out the ground gives you weird measurements.

   1. 🇳🇴 Thor — backup account (thorthenorseman@octodon.social)'s status on Monday, 10-Sep-2018 16:34:46 EDT 🇳🇴 Thor — backup account

      in reply to

      You'd think that someone could make a simple IC that does it. Attach a capacitor or RC circuit to a pin to control the ramp-up speed, and be done with it...

      1. 🇳🇴 Thor — backup account (thorthenorseman@octodon.social)'s status on Monday, 10-Sep-2018 16:38:51 EDT 🇳🇴 Thor — backup account

         in reply to

         If somebody knows of an IC that will take, say, a 5V single-sided supply, and spit out the same supply plus a 2.5V rail, and allow me to ramp both up gradually for 100 milliseconds or so, without a ton of external circuitry, please provide a model number or a datasheet.