[sdiy] EZ-AR circuit

[Frédéric Bourgeais]

Hi all,

I tried charlie lamm's EZ-AR circuit, as i need a basic AR EG.

http://www.charlielamm.com/synth/miniar.php

The module was quickly built, but I got strange results, and I don't know
if its due to it design.

For a 0V at the gate input, I got roughtly 10 v on the output
For a 5V at the gate input, I got roughtly 8 v on the output

I use metal can 2N2222, TL072 instead of 741 (as I want to build a second
EG on the board) and the circuit is +15/15V powered..

Does the circuit should be completed with an offset voltage and an
inverter stage, or I made a mistake ?

Thanks for your help
Fred