instability in the wave tail of a PI detector

[kt315]

whats up hahaha. you mentioned spider coil. we do not know this type of PI coil. we say 'speed coil', 'basket coil'.
NO THERE THE SPIDER COIL. again, you have to put pics of your coil.

[kt315]

My problem is that I can understand the noise, but instability is something else.
---
NOT instability. your signal form is absolutely unright.

[pustareka]

KINDERgarten

[Andi68]

I mean, just as the diode is at the gate, it does not fulfill its purpose.

Which voltage source is used, batteries, ....?

[kt315]

which voltage??? which book you had read before to ask? ITMD? simple rule - if you ignore the knowledge
you sure get the same result.

[Andi68]

Could also be a loose connection

[Ferric Toes]

The Vishay datasheet does show the drain connection at the bottom, but note that the internal bulk connection is joined to the source pin at the top. However, in Hesamavr's schematic, the MOSFET symbol shows the internal bulk connection is joined to the bottom pin, which is therefore the source. In this case, the coil is connected to the source and not the drain. Hesamavr also refers to pin numbers that do not exist in the datasheet.

My mistake: I was looking at Pustarika's schematic which is correct as far as the connections to the IRF9640 go.

Eric.