Senior Member
Joined: 21/02/2017
Location: PakistanPosts: 131
| Posted: 10:19am 04 Feb 2025 |
DSN-VC288 Hack for Accurate Current display
As reported earlier there was a substantial variation between the actual current flowing and the current displayed by the DSN. This has now been rectified by changing the gain of the LM358 used in the current measurement subsystem of the DSN. An 8.2K smd resistor was removed and wires soldered in its place. The wires were connected to a 100K pot since this is what was at hand and the needed value was between 10-15K. The result was fairly accurate. Later on I intend to replace the pot with a multi turn variable.
Now to connect it to the water heater and see the results.
Please stay tuned.
Azhaque