10-03-2023, 05:51 AM
(This post was last modified: 10-05-2023, 01:17 AM by dreieck.
Edit Reason: Mis-spelling corrected: "PWN" -> "PWM".
)
Ahoj,
I just had a "high power" soldering job with my Pinecil V2 (power supply: 65W USB C PD; soldering task: Thin steel surface) where I had the pinecil set to maximum temperature and constantliy heating the piece where I wanted to solder.
After some time (2 minutes or so) I heard some noises from inside the pinecil. It did sound a bit crippling, like boiling stuff escaping some enclosure, or so.
I immediately disconnected power supply.
Outside of the pinecil, I felt not anywhere hotness; after disassembling (which took some time where parts can cool down) neither.
Has anyone observed similar things? Is the Pinecil safe to use long time at high power (will safe-protect if too long)? Any thoughts on what I have observed?
I now did re-test without or with thermal load, and in both cases there are two types of noises:
* Some regular noise which sounds like coming from driving the power output FET (PWM noise),
* rarely, some irregular noise as described above.
The second one _may_ also be some noise related to regular operation, emitted by the small inductor on the PCB, but I cannot discern.
Does the regulation sometimes involve "very irregular" pulses through the power FET/ the inductor?
Regards!
I just had a "high power" soldering job with my Pinecil V2 (power supply: 65W USB C PD; soldering task: Thin steel surface) where I had the pinecil set to maximum temperature and constantliy heating the piece where I wanted to solder.
After some time (2 minutes or so) I heard some noises from inside the pinecil. It did sound a bit crippling, like boiling stuff escaping some enclosure, or so.
I immediately disconnected power supply.
Outside of the pinecil, I felt not anywhere hotness; after disassembling (which took some time where parts can cool down) neither.
Has anyone observed similar things? Is the Pinecil safe to use long time at high power (will safe-protect if too long)? Any thoughts on what I have observed?
I now did re-test without or with thermal load, and in both cases there are two types of noises:
* Some regular noise which sounds like coming from driving the power output FET (PWM noise),
* rarely, some irregular noise as described above.
The second one _may_ also be some noise related to regular operation, emitted by the small inductor on the PCB, but I cannot discern.
Does the regulation sometimes involve "very irregular" pulses through the power FET/ the inductor?
Regards!
