Amp repair equipment |
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bwilbee
Registered User Joined: 29 October 2007 Location: Isle of Wight Status: Offline Points: 318 |
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Posted: 03 October 2018 at 4:39pm |
Hi all, its been a long time since I've posted here!
So as a bit of a winter project this year I'd like to build up a bit of an electronics workshop and try my hand at a bit of electronics repair - I've got enough blown up kit to practice on! I'm not a total beginner, i'm certainly not scared of a soldering iron, but it's still a bit of a dark art to me.. And something I'd like to get better at. I'm not expecting to do this for money, its purely a hobby so I'm really looking at the budget end of the scale. So I'm looking at: Hantek DSO5102P 2 x 1000w 8ohm dummy loads A cheap eBay transistor/capacitor tester https://www.ebay.co.uk/itm/MK-328-Transistor-Tester-Capacitor-Inductance-Resistance-Meter-LCR-NPN-PNP-/323355630418 I've got a selection of gas irons and basic soldering stations, decent continuity meter and cheap multimeter's already. Is this a good selection to get me started? Do I need some kind of bench power supply too? Cheers |
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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A bench power supply is a very good idea - something that will give you (at least) up to +/- 18V @ 1A-2A. And a decent signal generator is essential! Edited by Earplug - 04 October 2018 at 10:27am |
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Earplugs Are For Wimps!
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bwilbee
Registered User Joined: 29 October 2007 Location: Isle of Wight Status: Offline Points: 318 |
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That would be a 0-36v bench supply with a ground wouldn't it? Is there an advantage to having a variac instead?
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I-shen Soundboy
Registered User Joined: 21 December 2016 Location: Big Smoke Status: Offline Points: 375 |
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A variac won't do DC. Useful for warming up old valve amps though...
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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No - you need a balanced supply. Most low power electronics - preamps, etc. need a +/- voltage - usually between 12V and 18V. That´s what most opamps run on. And of course a (separate) 5V supply for everything digital is also important. Some bench PSU units will come with all of that. Or - just build one yourself. It´s pretty straightforward with something like the LM317/LM337 regulators. I have this one: http://sound.whsites.net/project44.htm And have a look here: https://www.youtube.com/watch?v=R_PbjbRaO2E Edited by Earplug - 04 October 2018 at 10:56am |
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Earplugs Are For Wimps!
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bwilbee
Registered User Joined: 29 October 2007 Location: Isle of Wight Status: Offline Points: 318 |
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Thanks, sounds like a good project to get me started!
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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There´s lots of great projects on the ESP website! And plenty of interesting reading material as well. |
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Earplugs Are For Wimps!
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