Home |
Search |
Today's Posts |
#1
|
|||
|
|||
What's an LCR bridge do?
Shopping, revisited... -the local electronics shop referred me to an
area business that services and deals in used test equipment, so I went there and ended up buying a BK 2160 oscilloscope (60 mhz dual) and a Wavetek #114 function generator. I preferred seeing the things work before I bought used, and they set both up right next to comparable bench equipment they used and cross-compared both so I could see for myself. ----- They also had a LCR bridge on hand, a large original-Flash-Gordon looking sort of thing, for $700. When people on this newsgroup initially mentioned "using an LCR bridge" to test a transformer, I had assumed that this might be a particular circuit with instrumentation attached somehow, not another piece of equipment. I meant to ask what exactly the equipment did, but forgot along the way. What's inside that thing? ~ |
#2
|
|||
|
|||
On Mon, 13 Sep 2004 16:01:53 -0500, DougC wrote:
Shopping, revisited... -the local electronics shop referred me to an area business that services and deals in used test equipment, so I went there and ended up buying a BK 2160 oscilloscope (60 mhz dual) and a Wavetek #114 function generator. I preferred seeing the things work before I bought used, and they set both up right next to comparable bench equipment they used and cross-compared both so I could see for myself. ----- They also had a LCR bridge on hand, a large original-Flash-Gordon looking sort of thing, for $700. When people on this newsgroup initially mentioned "using an LCR bridge" to test a transformer, I had assumed that this might be a particular circuit with instrumentation attached somehow, not another piece of equipment. I meant to ask what exactly the equipment did, but forgot along the way. What's inside that thing? ~ Basically, a bunch of bridges! One quadrant of a bridge is missing, and you get to put your 'mystery' part on to it. Then by twiddling various knobs, you balance the bridge and 'null the meter'. Once the meter is nulled, you read the value of your part from the knob positions. Or from a digital readout on the newer ones. You can test coils for L and for Q, and you can test caps for C and for D. Also you can measure resistors of very low values, sometimes down to 1/100 ohm. It is important to know the test frequency, however, since you should test using a frequency of interest. Most use 1KHz, but some have inputs for external fr. I have a few bridges - I can't live without them! They are a designer tool really, but also for collectors of surplus parts! |
#3
|
|||
|
|||
$700 is way too much.
in my opinion I got a Heathkit IB-3128 in a bunch of stuff including 2 oscilloscopes and meters and boxes of parts and like a whole carload of books from a guys estate for $400 so if you want one just wait. they are around. nice if you are winding your own crossover parts and stuff and really great for measuring Caps accurately. Doug "DougC" wrote in message ... Shopping, revisited... -the local electronics shop referred me to an area business that services and deals in used test equipment, so I went there and ended up buying a BK 2160 oscilloscope (60 mhz dual) and a Wavetek #114 function generator. I preferred seeing the things work before I bought used, and they set both up right next to comparable bench equipment they used and cross-compared both so I could see for myself. ----- They also had a LCR bridge on hand, a large original-Flash-Gordon looking sort of thing, for $700. When people on this newsgroup initially mentioned "using an LCR bridge" to test a transformer, I had assumed that this might be a particular circuit with instrumentation attached somehow, not another piece of equipment. I meant to ask what exactly the equipment did, but forgot along the way. What's inside that thing? ~ |
#4
|
|||
|
|||
Bob said:
They also had a LCR bridge on hand, a large original-Flash-Gordon looking sort of thing, for $700. When people on this newsgroup initially mentioned "using an LCR bridge" to test a transformer, I had assumed that this might be a particular circuit with instrumentation attached somehow, not another piece of equipment. I meant to ask what exactly the equipment did, but forgot along the way. What's inside that thing? ~ Basically, a bunch of bridges! Looks like someone has a bridge to sell! -- Sander deWaal "SOA of a KT88? Sufficient." |
#5
|
|||
|
|||
Basically, a bunch of bridges! Looks like someone has a bridge to sell! Is one OK for getting across troubled waters, or do you need the whole bunch ? Patrick Turner |
#6
|
|||
|
|||
You can get a very good Genrad, B&K etc. LCR bridge on EBay for a lot less
than that. "DougC" wrote in message ... Shopping, revisited... -the local electronics shop referred me to an area business that services and deals in used test equipment, so I went there and ended up buying a BK 2160 oscilloscope (60 mhz dual) and a Wavetek #114 function generator. I preferred seeing the things work before I bought used, and they set both up right next to comparable bench equipment they used and cross-compared both so I could see for myself. ----- They also had a LCR bridge on hand, a large original-Flash-Gordon looking sort of thing, for $700. When people on this newsgroup initially mentioned "using an LCR bridge" to test a transformer, I had assumed that this might be a particular circuit with instrumentation attached somehow, not another piece of equipment. I meant to ask what exactly the equipment did, but forgot along the way. What's inside that thing? ~ |
#7
|
|||
|
|||
On Tue, 14 Sep 2004 22:28:49 +1000, Patrick Turner
wrote: Basically, a bunch of bridges! Looks like someone has a bridge to sell! Is one OK for getting across troubled waters, or do you need the whole bunch ? Patrick Turner Sometimes it's a bridge too far though... |
Reply |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
FS: Seven Ramsa DA7 cards w/meter bridge, parts | Pro Audio | |||
FS: Tascam MU-24 Meter Bridge for DM-24 - BRAND NEW | Pro Audio | |||
FA: Yamaha 02r digital console w/Meter Bridge, Analog I/O, and 2 ADAT cards - 1 more day! | Pro Audio | |||
FA: Yamaha 02r with meter bridge, 2 ADAT I/O cards and analog I/O card | Pro Audio | |||
FS: Pro Tools 24 farms, 888-24,adat bridge... | Marketplace |