kanamin
100+ Head-Fier
- Joined
- Mar 1, 2007
- Posts
- 305
- Likes
- 1
Quick question for anybody who wants to help.
I'm currently using tangent's opamp power supply to power an AD827-based preamp, the opamp controlling the virtual ground is an opa2111. This is hooked up to 2 9v batteries. The circuit is the first image attached.
I don't want to keep replacing batteries (it doesn't even need to be portable), so I thought I might make a power supply for it.
also attached is the recommended circuit from the lm317 datasheet. Instead of R1 and R2, could I connect a 100K pot as shown in the third pic? or would Iadj be too low for the regulator?
I'll be hooking this up to a 24v dc unregulated wall-wart.
I'm currently using tangent's opamp power supply to power an AD827-based preamp, the opamp controlling the virtual ground is an opa2111. This is hooked up to 2 9v batteries. The circuit is the first image attached.
I don't want to keep replacing batteries (it doesn't even need to be portable), so I thought I might make a power supply for it.
also attached is the recommended circuit from the lm317 datasheet. Instead of R1 and R2, could I connect a 100K pot as shown in the third pic? or would Iadj be too low for the regulator?
I'll be hooking this up to a 24v dc unregulated wall-wart.