Good evening.
Last week at work I stumled upon a quite old circuit used for testing active inrush-circuits (some engineer made it back in the early 90's), but noone knows anything about it, nor do they know where it came from, and curious as I was, I had to at least do a simulation of the circuit in question, since it's really quite unlike something I've seen before. It's a 3-phase sinusoidal oscillator, but done in a way I can't quite figure out.
A picture of the circuit has been attached to this thread.
Are there anyone here who can provide a rough explanation of the rough mechanism of action, which components are frequency-determining, or even point me in a direction where there is a similar circuit (maybe even with related equations)?
Thanks in advance.
Last week at work I stumled upon a quite old circuit used for testing active inrush-circuits (some engineer made it back in the early 90's), but noone knows anything about it, nor do they know where it came from, and curious as I was, I had to at least do a simulation of the circuit in question, since it's really quite unlike something I've seen before. It's a 3-phase sinusoidal oscillator, but done in a way I can't quite figure out.
A picture of the circuit has been attached to this thread.
Are there anyone here who can provide a rough explanation of the rough mechanism of action, which components are frequency-determining, or even point me in a direction where there is a similar circuit (maybe even with related equations)?
Thanks in advance.
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