Gerry Sweeney's got a capacitance decade out aswell now Brilliant - Page 1
Forum section: electronics / beginners

author: M0BSW
author_rank: Frequent Contributor
timestamp: August 24, 2013, 06:38:54 am
content: Gerry's got a capacitance board out now as well Brilliant have a look here's the link

author: Christe4nM
author_rank: Unknown
timestamp: August 25, 2013, 02:17:47 pm
content: Yep, saw his blog yesterday. Decided it was time to get one each of his boards. Quite handy to have around.

author: Ziltoid
author_rank: Contributor
timestamp: August 25, 2013, 02:44:40 pm
content: I think he should have used dip switches instead of jumpers.

author: dr.diesel
author_rank: Super Contributor
timestamp: August 25, 2013, 03:10:54 pm
content: Quote from: Ziltoid on August 25, 2013, 02:44:40 pmDip switch are not nearly as durable as jumpers.

author: BravoV
author_rank: Super Contributor
timestamp: August 25, 2013, 03:12:42 pm
content: Quote from: dr.diesel on August 25, 2013, 03:10:54 pm+1, especially the cheap one.

author: ddavidebor
author_rank: Super Contributor
timestamp: August 25, 2013, 04:33:34 pm
content: And jumper are very easy to replace, modify or change

author: c4757p
author_rank: Super Contributor
timestamp: August 25, 2013, 05:02:08 pm
content: Quote from: Ziltoid on August 25, 2013, 02:44:40 pmI just felt a chill run down my spine.

author: jancumps
author_rank: Unknown
timestamp: August 25, 2013, 10:18:55 pm
content: Quote from: mojo-chan on August 25, 2013, 09:37:55 pmThanksalot.

author: komet
author_rank: Unknown
timestamp: August 25, 2013, 10:39:33 pm
content: Quote from: mojo-chan on August 25, 2013, 09:37:55 pm"As well"aretwo words.

author: c4757p
author_rank: Super Contributor
timestamp: August 25, 2013, 11:25:59 pm
content: "As well"istwo words, as the quotation marks group all the shit between them into one phrase, and that phraseismade up of two words."As"and"well"aretwo words, as are "donkey" and "pencil", but that sentence implies nothing about their use when grouped together.

author: TerminalJack505
author_rank: Super Contributor
timestamp: August 25, 2013, 11:30:33 pm
content: Allright now. Let's not goto extremes.

author: c4757p
author_rank: Super Contributor
timestamp: August 25, 2013, 11:34:04 pm
content: I hate you.

author: mariush
author_rank: Super Contributor
timestamp: August 25, 2013, 11:49:45 pm
content: I guess it's OK... but I think 10% tolerance is a bit too much for my tastes.

author: c4757p
author_rank: Super Contributor
timestamp: August 25, 2013, 11:55:13 pm
content: I think I'd be OK with 10% on a capacitance box. Makes up for how stupidly accurate I'd want a resistance box to be...I typically use the E2 series for capacitance values: 10 and 47!

author: MrAureliusR
author_rank: Unknown
timestamp: August 26, 2013, 01:26:22 am
content: Man, I want both of those boards so bad... I'm eventually going to build my own decade capacitance box. It's the damn decade switches that are so expensive! But I like the rotary knob idea although I certainly like these ones as well..

author: gerrysweeney
author_rank: Regular Contributor
timestamp: September 14, 2013, 03:10:46 am
content: Quote from: mariush on August 25, 2013, 11:49:45 pmI know what you mean with the tolerance - I wanted to get better than that but cost remained a driving factor and things start to get very expensive in SMD when you increase the tolerance. The caps I selected are consistently better than 5% in tolerance but they are rated at 10% so thats what I put on the board and in the specs.In use though the absolute value is less important that the ability to trim to the right value I find, I tend to check with an LCR meter once I know what value works, you still end up picking a "nearest" preferred value for your final circuit most of the time.Gerry

author: gerrysweeney
author_rank: Regular Contributor
timestamp: September 14, 2013, 03:12:57 am
content: Quote from: M0BSW on August 24, 2013, 06:38:54 amThanks for posting. I am very luck to get the support for these simple projects and I really appreciate it, I am delighted to make stuff that people actually find useful. I guess simple-low-cost-useful combination is a good one.Gerry

author: Fsck
author_rank: Super Contributor
timestamp: September 14, 2013, 04:26:42 am
content: it's also gorgeously compact and stupidly simple (KISS!) which makes it even better.

author: WarSim
author_rank: Frequent Contributor
timestamp: September 14, 2013, 04:37:39 am
content: I bought two of them and there was one small assembly issue. The connection triplets are created by a double and a single. The problem was the single was slanted out about 3deg from the double. I considered re-soldering the single strips but ended up just bending the rows back vertical. No idea if it will effect longevity.I don't know if there is a manufacturing solution to avoid this that will not cause too much cost. I haven't thought of a solution that would be cheep enough, not knowing the part delivery packaging.But Gerry may want to bring this up with his manufacture for possible compensation this run and a fix for next run.