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Test and Trim
- Thread starter Zsonali
- Start date
It is the tweak step, the step where you twist a knob or change resistors or do something to set something.
It is done after assembly when the unit is functional.
An example would be a fixed voltage power supply where the output voltage is adjusted to a very tight tolerance by adjusting an internal potentiometer.
In the hybrid world this was quite common. Hybrids don't use PCB they use a ceramic base with resistors and connections printed right onto the ceramic base. Resistors are "trimmed" by cutting material away with a laser to increase the value. This can be done at a test step to get very accurate settings.
It is done after assembly when the unit is functional.
An example would be a fixed voltage power supply where the output voltage is adjusted to a very tight tolerance by adjusting an internal potentiometer.
In the hybrid world this was quite common. Hybrids don't use PCB they use a ceramic base with resistors and connections printed right onto the ceramic base. Resistors are "trimmed" by cutting material away with a laser to increase the value. This can be done at a test step to get very accurate settings.
