Using two 9 v batteries as a dual power supply – Erica Synths EDU DIY Wavefolder Eurorack Module Kit User Manual
Page 29
USING TWO 9 V BATTERIES AS A
DUAL POWER SUPPLY
Dual power supplies are great – and if you want to get serious about synth design, you
should invest in one at some point. But what if you’re just starting out, and you’d like to
use batteries instead? Thankfully that’s totally doable.
You just need to connect two 9
V
batteries like shown here
. For this, you should use 9 V battery clips, which are cheap &
widely available in every electronics shop.
By connecting the batteries like this, the positive terminal of the left battery becomes your
+9 V, while the negative terminal of the right is now your –9 V, and the other two combine
to become your new ground.
Please make sure you disconnect the batteries from
your breadboard when you make changes to the circuit!
Otherwise you run the risk of
damaging components.
If you’re struggling with setting this up, you can watch me do it here:
29