Voodoo Main Discussion

[SilverSurfer17]

It shows TLC and few others but not that exact TC but im kinda sure its the same ill just order them

[Matt_Rowe]

surfdetector video on the 4066, dont know if it will help you.
https://www.youtube.com/watch?v=6im66f8PGbk

[SilverSurfer17]

Yeah ive seen it and all that it controls so no wonder why everything looks weird i ordered 2 of them

[waltr]

[ATTACH]54574[/ATTACH]Does the TC in TC4066BP make a difference ? It says quad

TI CD4066 data sheet:
https://www.ti.com/lit/ds/symlink/cd...oogle.com%252F

Toshiba TC4066 data sheet:
https://datasheetspdf.com/pdf/512442...tor/TC4066BP/1

These are pin for pin compatible and electrically equivalent.

[surfdetector]

TI CD4066 data sheet:
https://www.ti.com/lit/ds/symlink/cd...oogle.com%252F

Toshiba TC4066 data sheet:
https://datasheetspdf.com/pdf/512442...tor/TC4066BP/1

These are pin for pin compatible and electrically equivalent.

I think that the only thing to note is that the CD4066 has a lower on state resistance across the switch than the 4016

[SilverSurfer17]

Ok good thank you i figured they where they where only a few bucks so i just ordered them

[godigit1]

Ok good thank you i figured they where they where only a few bucks so i just ordered them

going back a little.
Maybe I'm wrong but in most you scope shots it looks like you are triggering on the leading edge you want to look at the turn off.
try connecting directly to the damping resistor with probe set to 10 x and look at the coil before the pre amp. it may help you to see if your damping is close since your not seeing proper signal at the preamp.

[SilverSurfer17]

It had the wrong chip in it no matter where i looked at it it was horse poop i think i know what you mean moving the wave left and looking at it from the right side but it still all just looked wrong no matter what i tried

[SilverSurfer17]

The probe was at 10x i knew i could move the trigger up and down and the signal left and right i didnt know there where other types of triggering methods im going to have to wait a few days for those chips to get here while im waiting im going to watch some more videos on oscilloscopes and bust open the user manual and learn how to use all the stuff on mine

[SilverSurfer17]

And also thats like the 6th time 3 different people have mentioned the damping resistor plus in posts am i suppose to calculate using the inductance to get the tx value for that loop then use the jig to tune in rx or can i use the jig on tx and rx and the graphs in the book for tp5 and tp2 are those with a loop connected and the right resistor or can i get to that point just using the jig on tx and eliminate the coil the capacitor and whats suppose to be the right resistor

[Matt_Rowe]

damping resistor video from surfdetector, showing wave form and the jig hooked up
https://www.youtube.com/watch?v=Gr__N4_k2Mc

[SilverSurfer17]

Yeah he's using a loop connected and he's adjusting for the right resistor but that still doesn't tell me if when the loop isn't connected if the waveform will still look like in the book if not im spinning my wheels i want to eliminate it all down to just the board and the jig if possible until i get the board working right also he might have a capacitor connected to the loop that might have to be in there

[SilverSurfer17]

Ill just wait until the chip gets here and see for myself since no one can seem to answer it or i missed the info somewhere

[MartinB]

I already asked about 1/4 watt and such about resisters a long time ago here when i first started here,
i thought the higher wattage would be better and handle more current because im a electrician, bigger is better but not here

Hi Matt
As an electrical engineer I can empathise with you, but I am enjoying this smaller side of life

[SilverSurfer17]

Thanks Surf i found the answer i was looking for in the comments of your video the graphs are for a tuned loop