Check out @GerkI’s post: http://everycircuit.com/circuit/5184900070899712
for more details if interested in the whole story.
...But basically this is a voltage regulator circuit I had designed to drive his 6 LED matrix and touch switch. It actually took several different designs and attempts before finally ending up with this one. EC does not accurately simulate it, but when built in real life without the 100nF capacitor, it oscillates like crazy anywhere between a several hundreds of kHz and up to 1.8MHz even with a heavy load on the output. So that capacitor is absolutely crucial and hence, was the biggest improvement for the entire design.
Tested with 5v supply.
Ignore most of EC, because I have taken several tests and measurements, and the output never went above 3.08V even with no load, or dropped below 2.8v with even a 15 Ohm resistor as a load, and never dropped below 2.92v with a 37 Ohm load.
I did alter 2 resistor values slightly to make it much easier to component wise, and the other one was crucial to change, the 500 ohm.
1. Changed the 500 to 100
2. Changed the 6.7k to 6.8k
3. Added a 100nF capacitor
*The 1pF capacitor between ground is only to fix some previous simulation issues... if you plan on actually building this, nothing will work with that 1pF capacitor there, simply replace with a wire*
