Leave these fields empty (spam trap):
Name
You can leave this blank to post anonymously, or you can create a Tripcode by using the float Name#Password
Comment
[*]Italic Text[/*]
[**]Bold Text[/**]
[~]Taimapedia Article[/~]
[%]Spoiler Text[/%]
>Highlight/Quote Text
[pre]Preformatted & Monospace text[/pre]
1. Numbered lists become ordered lists
* Bulleted lists become unordered lists
File

Sandwich


WEED IS LEGAL IN CANADA! Live 420chan Q&A and Site Merchandise Giveaways on Stream

Live 420chan Q&A, 420chan merchandise giveaways, Logitech hardware giveaways, partying on Twitch tonight!
G502 Giveaway Ends @ Midnight     Q&A Discussion Thread
Chad Hacks by ArchieBennerfoot.lab - Wed, 09 May 2018 05:45:02 EST ID:raD+QaEE No.121795 Ignore Report Quick Reply
File: 1525859102525.jpg -(74823B / 73.07KB, 600x808) Thumbnail displayed, click image for full size. 74823
I have bought some PNP transistors. I had this theory that because NPN transistors are normally open until you apply a positive current to the "base", that PNP transistors would be normally closed until you applied current to the "base. OH BOY I WAS WRONG!

This leads into my question. I want a device that will stay in a closed state until I apply current to a base (or equivalent). I don't want to use relays for this because they require 12v to run and I already have another relay in my circuit (so no no to more relays). Instead I want a hacky chad solution to my problem. I would prefer to stick to something that is solid state, which won't add too much resistance to my first relay.
>>
CyrilShakeman.pst - Wed, 09 May 2018 09:30:24 EST ID:vpfE8QdL No.121796 Ignore Report Quick Reply
there is plenty of 5v relays to choose form
>>
ArchieBennerfoot.lab - Wed, 09 May 2018 10:50:03 EST ID:raD+QaEE No.121797 Ignore Report Quick Reply
1525877403525.jpg -(61357B / 59.92KB, 600x400) Thumbnail displayed, click image for full size.
>>121796
what if I just use a transistor that short circuits the whole circuit so it forces the other wires to get bypassed and thus stop current from running through them? would that be a good idea?
>>
The_experiencecoin_guy - Tue, 15 May 2018 19:41:40 EST ID:MMjX5zvr No.121809 Ignore Report Quick Reply
1526427700387.png -(7180B / 7.01KB, 488x388) Thumbnail displayed, click image for full size.
PNP transistors and NPN transistors are very simple devices. They work the same, except one requires a ground at the base, while the other requires a positive voltage. What you want is a NOT gate, here is a simple one using NPN transistors.

The idea is, the input transistor draws all the power away from the secondary transistor to stop the secondary transistor from conducting.
>>
The_experiencecoin_guy - Tue, 15 May 2018 19:43:43 EST ID:MMjX5zvr No.121810 Ignore Report Quick Reply
>>121809
Well, maybe you want an amplifier instead of a NOT gate.
>>
The_experiencecoin_guy - Tue, 15 May 2018 19:49:16 EST ID:fochPiHu No.121811 Ignore Report Quick Reply
1526428156992.png -(7336B / 7.16KB, 488x388) Thumbnail displayed, click image for full size.
>>121810
The Amplifier is similar, except it uses a PNP transistor as the secondary, instead of an NPN.


Report Post
Reason
Note
Please be descriptive with report notes,
this helps staff resolve issues quicker.