A small Dave parody  - Page 1
Forum section: electronics / general

author: Whales
author_rank: Super Contributor
timestamp: December 12, 2014, 10:10:18 pm
content: Just for fun. The device itself is not very interesting but I go through a few other things too.Quote

author: Radio Tech
author_rank: Frequent Contributor
timestamp: December 12, 2014, 11:59:18 pm
content: After a crappy day I had.....I really enjoyed whatching you have fun.

author: calexanian
author_rank: Super Contributor
timestamp: December 13, 2014, 06:59:43 am
content: No worries about leaded solder. After 25 years of using kester 44 lead solder and who knows what else I have been around I asked my doctor to give me a heavy metals test. Came back clear. Evidentaly the lead is alloyed with the tin to such a degree that it is no longer bio available. Its when it gets oxidized out by extreme heat is when you need to worry. Not typically encountered in electronics. Also I asked about mercury from flouro tubes and the like and he explained to me that mercury generally speaking is not bio available and in its pure uncompounded form is not so bad. Casual avoidance is sufficient. Don't stick your fingers in it or drink it, but you don't need to do a shoulder roll out of the room if you drop a bulb or a thermometer.

author: EEVblog
author_rank: Unknown
timestamp: December 13, 2014, 08:25:22 am
content: Your lighting sucks

author: SeanB
author_rank: Super Contributor
timestamp: December 13, 2014, 08:41:48 am
content: Quote from: EEVblog on December 13, 2014, 08:25:22 amShould I send you a lamp older than your father Dave?

author: Whales
author_rank: Super Contributor
timestamp: December 13, 2014, 09:17:27 am
content: I take this as a challenge Dave! I'm going to wire up every LED strip and LCD backlight I have to finally give my desk some nice lighting.No more soldering in the dark.QuoteNo worries, I was cracking a jokeIt's interesting to read your story. I'm curious about the mercury -- as I understand the forms it's available in change over the lifetime of a fluoro tube.

author: SeanB
author_rank: Super Contributor
timestamp: December 13, 2014, 09:33:01 am
content: Starts off as between 4-100mg of liquid mercury metal as initial factory fill, and over the life of the lamp this is evaporated by the hot parts of the tube and condenses in the cooler areas. There it chemically reacts with the phosphor coating and becomes very firmly chemically bound in a hard to break bond. You get more mercury in a piece of apex predator fish ( like tuna) than in a flourescent tube, and there it is chemically reactive as well.

author: Towger
author_rank: Super Contributor
timestamp: December 13, 2014, 09:50:41 am
content: No record head? Is it just a tape player.

author: Whales
author_rank: Super Contributor
timestamp: December 13, 2014, 10:56:45 am
content: Quote from: Towger on December 13, 2014, 09:50:41 amPresumably. There was no input jack either.I felt the same about a VCR I found the other day. No record functionality whatsoever -- more of a 'VCP'.

author: Towger
author_rank: Super Contributor
timestamp: December 13, 2014, 11:03:41 am
content: It is actually the erase head which is missing, from memory playing and recording was done via the center head

author: nixfu
author_rank: Unknown
timestamp: December 13, 2014, 11:35:48 am
content: I hope he does a mailbag next.

author: rs20
author_rank: Super Contributor
timestamp: December 13, 2014, 12:07:32 pm
content: Loved this video!

author: Radio Tech
author_rank: Frequent Contributor
timestamp: December 13, 2014, 12:11:22 pm
content: Quote from: nixfu on December 13, 2014, 11:35:48 amYeah, and uses a sling blade to open the packages

author: SeanB
author_rank: Super Contributor
timestamp: December 13, 2014, 12:23:12 pm
content: Quote from: Whales on December 13, 2014, 10:56:45 amFunny thing is I have some VCR units that are record only, you need to add a playback board to use them to play back tapes, though that is just a cable to give you the video and audio outputs for alignment of the unit during repair. The record heads will still record well even when they are worn down to the point that they no longer can do playback properly.

author: Howardlong
author_rank: Super Contributor
timestamp: December 14, 2014, 07:28:43 am
content: Quote from: SeanB on December 13, 2014, 12:23:12 pmReminds me of this devicehttp://repeater-builder.com/molotora/gontor/25120-bw.pdf

author: Riotpack
author_rank: Regular Contributor
timestamp: December 14, 2014, 10:03:37 am
content: It uses a permanent magnet as an erase head

author: Whales
author_rank: Super Contributor
timestamp: December 14, 2014, 10:00:19 pm
content: A mailbag sounds like a good idea. It would take a lot of organisation to fabricate the packages but there's a lot of material to play with."Next is a package from Deutsche Post in Germany. Hi to all my German viewers! Thanks for sending me this package Deutsche Post, I'm sure *turns package over* Abel *flips it back* would be happy to see it arrived."*proceeds to thank each postal service for "sending me this" for each package*

author: Towger
author_rank: Super Contributor
timestamp: December 14, 2014, 10:29:14 pm
content: Just order some cheap tat on ebay and film your self opening it. Good enough for another electronic video bloggers mailbag :-)

author: Excavatoree
author_rank: Frequent Contributor
timestamp: December 14, 2014, 10:35:22 pm
content: Quote from: SeanB on December 13, 2014, 12:23:12 pmI had one customer get into a nasty argument with me when he brought his VCP in for repair with the complaint "won't record." I explained that it was a player only, but he swore it was a VCR and I should fix it. Pointing out the lack of a record button did no good.

author: calexanian
author_rank: Super Contributor
timestamp: December 15, 2014, 07:25:30 am
content: As said above recorders like this one use magnets to erase the tape. The pot coil he was pointing to is not an inductor for the speaker but used for the bias oscillator. It was common practice to superimpose a 60 KHZ or so signal along with the record signal for recording. On pro units that had erase heads this was just "Borrowed" from that circuit but magnet erase units would have quite a bit more of this bias to ensure the magnetic tape is happy.

author: Christe4nM
author_rank: Unknown
timestamp: December 20, 2014, 06:31:34 pm
content: Nicely done, I had a good laugh

author: Whales
author_rank: Super Contributor
timestamp: December 22, 2014, 01:22:29 am
content: Thankyou to everyone who thought this video was entertaining. It has a lot of rough edges and I don't think I'll be making much again, but it was definitely fun.

author: lapm
author_rank: Frequent Contributor
timestamp: December 22, 2014, 01:41:45 am
content: Now that cheered up a bit my otherwise pretty shitty day.

author: nixfu
author_rank: Unknown
timestamp: December 22, 2014, 04:24:10 am
content: Mailbag ideas:1) Open a package marked URGENT , and show it has been in the queue for several years, and apologize for not getting to it sooner.2) Tear open a padded envelope and get that fluffy stuff everywhere and have it just explode like a pillow fight3) Get a harbor freight $3 multi-meter in the mail and do a tear down and praise its quality4) Receive a PCB to review that is for some sci-fi gadget that does not exist like a warp drive or transporter or something5) Get an abacus, and tear it down and compare it like a classic calculator6) Don't open packages with a Dundee knife, use a samurai sword and open them Belushi style.

author: ivan747
author_rank: Super Contributor
timestamp: December 23, 2014, 10:45:51 am
content: Your video is quite funnyYou sound slightly annoyed, which is funny, and still you're informational.Reminds me of Ashen's channel.

author: Whales
author_rank: Super Contributor
timestamp: December 23, 2014, 12:37:35 pm
content: QuoteOPEN BEFORE MILLENNIUMQuoteWoah, hold it there. I don't know what kind of show you're after but I don't do anything that isn't family friendlyQuote from: ivan747 on December 23, 2014, 10:45:51 amThanks ivan.This confirms my worst fears -- I'm posh! I'm going to watch parliamentary debates until this is rectified.