Hi,
I tested (measured) some older power supplies from different devices (3.7V, 4.5V, 12V-1A, etc)
Half of them are giving much higher voltages... like: 19V instead of 12V, 20V instead of 16V, even 9V in stead of 3.7V...
So I tried a working power supply for a NiMh battery of 9.6V / 600mA. The battery gave 10.3V and de power supply 25.6V...
Settings on meter : DC, 200V
Are these supplies or my meter broken?
Has it something to do with the fact that there is no working circuit?
It tried batteries:
3V gave 3.14V
9V gave 9.46V
new 1.5V gave 1.61V
home AC gave 224V (220V for Belgium)
Someone an idea?