The meters came from A Chinese seller on EBay. I don't have a record of the seller. These meters are commonly available on EBay , Amazon, AliExpress etc.
I finally have my power supply finished! It's on the shelf! I'm doing some full power tests.
I Started with a pair of the Chinese circuit board kits. Lucky that I found this thread. I made the mods to the boards and added higher power components and PWM fan control.
My transformers have...
Great job! I'd checked the positive supply and it's ripple was low. I forgot to check the negative supply. The negative supply has a lot of ripple. Now to troubleshoot that problem & get it fixed.
Thanks a bunch!
I should have provided more information. I built the revised circuit that uses the TLE2141 op amps.
Also, the noise only occurs when in constant current mode. It happens regardless of the voltage or current settings. I put a 100 ohm load on it with the voltage set to 10V. (100mA load). As I...
I've built a power supply using this circuit. I noticed that it is noisy/oscillating when in constant current mode. When probing the circuit I see this oscillation on the current sense op-amp. Has anyone else seen this? Not a big problem for me as I'll probably only use CC to keep from letting...