Making standard 10k resistor - Page 1
Forum section: electronics / general

author: nikonoid
author_rank: Regular Contributor
timestamp: April 02, 2023, 05:57:29 am
content: I have not posted in a while. Today I wanted to share an environmentally conscious design for a standard resistor:It is using custom made pure copper binding posts:PTFE (Teflon) wires to connect to the resistor:4 wire connection is made to special ORGANIC RESISTANCE STANDARD material:It initially came out to be around 7k Ohms. It will be trimmed to perfect 10,000 Ohms after setting. As a lead designed, I will personally eat everything that is trimmed of the resistor.Here is a little more on construction in case you would want to make one of your own. Construction on the top of the pizza box is highly recommended. Responsibly grown and environmentally safe bamboo insulator is essential for proper functionality.Organic material needs to be precision cut:Heavy aluminum bus bars are needed for reliable contact:Mode details on design:If you have any ideas on improving the design, please let me know. I want to thank #leighcorrigall for his help in building the standard.Belated Happy APRIL 1st to everybody.

author: coppercone2
author_rank: Super Contributor
timestamp: April 02, 2023, 06:19:38 am
content: you used wood as a dielectric. It should be fused to a ceramic substrate.

author: branadic
author_rank: Super Contributor
timestamp: April 02, 2023, 06:32:05 am
content: In terms of c.t.e. the construction looks rather poor.Since we know how well wirewound resistors can perform I suggest to bifilar wound a resistive wire to a Wiener, as it gives a soft but well defined bobbin. Due to its texture it will put no pressure onto the resistive wire over temperature, but relax in axial direction.-branadic-

author: coppercone2
author_rank: Super Contributor
timestamp: April 02, 2023, 06:46:44 am
content: A caramel casting would serve as a better more dimensionaly stable base plate compared to the wood block, so long its hermetically sealed. And you want some helix springs

author: chekhov
author_rank: Regular Contributor
timestamp: April 02, 2023, 09:39:09 am
content: Don't forget to fill the tank withoilformalinin order to match the other best designs on the market.And, you definitely have to provide thermal/whateverinstability curve with it.

author: branadic
author_rank: Super Contributor
timestamp: April 02, 2023, 09:58:37 am
content: Reminds me of TiN's unlocking of 3458Aand the improvements I made on Prema 5017 (improved noise and INL of ADC as well as improved reference) I was working on in the last months.-branadic-

author: Dr. Frank
author_rank: Super Contributor
timestamp: April 02, 2023, 12:29:58 pm
content: Sorry, same fault as always with standard resistor construction!That design definitely misses a thermometer inside the resistive mass!I propose to add a Piercing Thermometer 100 (PT100) for BBQ.This kind of Sensor should directly interface with your HP34970A DAQ/DMMFrank

author: Conrad Hoffman
author_rank: Super Contributor
timestamp: April 02, 2023, 12:42:25 pm
content: I'd think with the addition of a thermometer and application of the right voltage, you should be able to hit medium rare with extreme precision.

author: MrYakimovYA
author_rank: Regular Contributor
timestamp: April 03, 2023, 03:20:08 am
content: Hello!Very nice construction!If you allow I would say some advices:1. There must be added the fifth blue post binding. It's the Guard. And it must be connected to your metal case. Some precision measurements may require The Guard connection starting from 10 kOhm.2. Change the wood with some high insulation material (Teflon, for example).

author: leighcorrigall
author_rank: Frequent Contributor
timestamp: April 03, 2023, 09:26:23 pm
content: The next resistor iteration may have custom options such as vegan leather, RoSH compliance, and more 'Zen' designs. Post-manufacturing options will include running the resistor at several 1000 volts to artificially age the resistor while enjoying the fresh smell of bacon. Our guarantee is to charge extra for the same or lesser product!

author: MegaVolt
author_rank: Frequent Contributor
timestamp: April 05, 2023, 09:36:34 am
content: Quote from: branadic on April 02, 2023, 09:58:37 amWhere can you read about it?

author: alm
author_rank: Super Contributor
timestamp: April 05, 2023, 10:01:20 am
content: Quote from: MegaVolt on April 05, 2023, 09:36:34 amI imagine branadic will publish more details on April, 1st 2024

author: MegaVolt
author_rank: Frequent Contributor
timestamp: April 05, 2023, 11:05:37 am
content: Quote from: alm on April 05, 2023, 10:01:20 am

author: bastl_r
author_rank: Regular Contributor
timestamp: April 05, 2023, 05:51:46 pm
content: Quote from: branadic on April 02, 2023, 09:58:37 amHi brandiacCan you send me your hacked Firmware too?bastl_r

author: TimFox
author_rank: Super Contributor
timestamp: April 05, 2023, 06:15:44 pm
content: General comment about the metal case:When I build similar circuitry, I try to fit the "guts" on the panel, to minimize the wiring, as well as using a fifth banana jack or small binding post for the case connection (as mentioned above).This allows the use of heavy solid Cu wire, with a slight bend for strain relief, between the posts and the device.