Hello all forum newbie,
I have been trying to understand part of a larger circuit, pictured. The circuit is designed to detect a small pulse produced by a detector. The aim is to understand and upgrade the 30year old circuit hoping for a small increase in efficiency. It is part of a work based side project of mine and I'm at the point where I'm assessing the viability.
My ongoing/learning interpretation so far is, the 47pF cap near TP4 (far left picture) is present to remove the 5kV DC voltage? A voltage divider lowers the potential at the inputs, possibly helps reduce ringing too, terminated to Gnd through divder? The op amp seems to be running as a differentiator. Could you please help me understand if my analysis thus far is correct and what are the two diodes for across and Vin on the op-amp?
Many thanks
Dan
I have been trying to understand part of a larger circuit, pictured. The circuit is designed to detect a small pulse produced by a detector. The aim is to understand and upgrade the 30year old circuit hoping for a small increase in efficiency. It is part of a work based side project of mine and I'm at the point where I'm assessing the viability.
My ongoing/learning interpretation so far is, the 47pF cap near TP4 (far left picture) is present to remove the 5kV DC voltage? A voltage divider lowers the potential at the inputs, possibly helps reduce ringing too, terminated to Gnd through divder? The op amp seems to be running as a differentiator. Could you please help me understand if my analysis thus far is correct and what are the two diodes for across and Vin on the op-amp?
Many thanks
Dan
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