This old welder has a pulse-range from nearly 0.5Hz up to 500Hz done by analogue frequency generator by default. This old set-up of analogue pulse is not replaced with the new, it can be used if I want.
One of the features I love is that this new set-up can provide higher pulse frequency from 500Hz up to 900Hz, which I found useful in welding thinner steel sheet.
The arc sometimes wonders when the welding amperage is set low, like 30A for welding current and 5A for base current.
But I feel like this problem has nearly gone since I added this new digital generator by applying DC welding pulse frequency higher than 750Hz;
with this frequency the arc shows somewhat better stability to the aimed point.
Below is a default wave form of Alternative Current welding, aluminium for example, showing the minus peak as 45A besides overshoot.
Output power is set to 50A for welding;
This shows the real welding power is a tad lower than the setting value.
Here is another wave form attained with the same setting but the output power was set to 30A;
Now I'm going to replace the rectangular wave forms of the both sides (of plus and minus domains), with a couple of pulses of arbitrary frequencies given by this new addition;
Replaced the rectangular wave with 650Hz pulses, setting power 150A for welding.
also with 700Hz pulses, setting power 170A.
Last edited by chy_farm; 07-28-2020 at 05:43 PM.
Last edited by Jon; 07-29-2020 at 11:24 AM.
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