Lords of the Ring

[mrd10]

Good work there GK

[aether22]

Ok, I suck at making circuits.

There are several reasons I haven't tested my almost completely build TPU (v1, GK's design) and most of it comes down to troubles with the 555 circuit, I solved most of the problems but 1 remains.

When I have any one of the 555's on it works fine, but when I turn on 2 or especially 3 they somehow interfere with each other.

Now this may be because I don't have a small value cap between pin 5 and GND, but I figured as everyone here has built this circuit, you should all know how to fix it.

So has anyone else had this problem?

[AhuraMazda]

I guess you are using the same supply for your electronics as the coils. I suggest you feed the circuit either from a separate supply or feed the existing supply though a diode to a 1000uF capacitor and feed your circuit from across the capacitor.


AM

[aether22]

Nop, no coils even connected yet, was just checking out the 555 circuit.

If you have not had this problem, please indicate if you put the cap on pin 5 and ground. (it will be a bit of a pain to add this 'optional' cap so I'd rather establish if it can possibly be the cure)

[pese]

@aether
the dc line  also transfer the frequencies to each other 555 !
"decoupling" this . each 555 "hook up" elektrolydt 10-50mf also
one 0,1mf (ceramic disk or foil-block)
if possibel connect al - (minus or grund points of IC (even ALL other in- and outputs)
to an SINGEL point !!!

(1mf = 1uf)

pese