23 Jan
2017
23 Jan
'17
10:48 a.m.
On 22/01/2017 20:10, "Tony Duell" <ard.p850ug1 at gmail.com> wrote:
I didn't think of a 555 in that scenario but that makes sense. I've marked
it as such for now, cheers!
Tonight it's 'address pins and why I get inconsistent results on a logic
analyser while looking at everything that touches A7' :)
--
Adrian/Witchy
Binary Dinosaurs creator/curator
Www.binarydinosaurs.co.uk - the UK's biggest private home computer
collection?
That looks
like an opamp to me, with bias pins connected to GND?
Does it? It looks like a 555 timer to me at first glance. I would have
expected another
capacitor from pins 2/6 to ground though.
1 Ground
2 Trigger (linked to threshold, and to output via a timing resistor)
3 Output (driving the MOSFET)
4 Reset/ (pulled high via a resistor)
5 Control Voltage (decoupled to ground)
6 Threshold (see 2)
7 Discharge (not used here)
8 Vcc