Products > Test Equipment
Sencore LC102 & LC103 Capacitor & Inductor Analyzer
mr.fabe:
--- Quote from: coromonadalix on August 06, 2019, 05:07:41 pm ---Tks mr.fabe
Checked the bnc fuse contacts just in case, i think it was never unscrewed ?
Opened the casing, never touched or repaired, all seems fine, managed to supply it thru an computer fan connector on the 3 pins psu dc in / battery in connector ..... 12vdc simulated battery works fine but it wont start on the 3 pins dc plug, it need at least 15 - 18vdc to start.
Found an 2 feet bnc to 3.5 mm already made cable (dont know its use or how i got it 10 years ago ??, it zero and open fine yepeeee loll test at 6.5 pf ?? gonna add an 3.5mm female plug with 2 clip connectors, i'll sse if it accepts them
And find an 12vdc lead acid battery of the same size ??
This one has different / newer reed relays, they are "metallic" enclosed ?? from American Relay
--- End quote ---
BNC fuse connector causes a lot of issues with the Sencores that use them. Poor contact affects the lead zeroing.
The power plug requires at least 18 VDC. You can power the unit with lower voltage but it will shutdown on leakage tests depending on the test voltage used.
Cables used for test leads are the RG62 / 93 ohm stranded core similar to the Belkin 8255 but a little softer. Some LC units can zero out with RG58 but have issues with lower cap readings.
Powersonic batteries work with clip with adapter plug.
HighVoltage:
--- Quote from: mr.fabe on August 06, 2019, 06:28:53 pm ---Powersonic batteries work with clip with adapter plug.
--- End quote ---
Interesting,
Do you have a link to that battery?
I see some batteries on ebay for around 70 US$
Are they worth it?
GEOelectronics:
I've had the LC103 since it first came out, now they cost more used than new back then, wish I had bought a spare! L+C but not R specifically. Be careful at the HV settings, they mean business. Blew out one GR polyethylene decade cap during testing- egad, IET does not sell individual caps but glad to sell an individual decade switch- at a price.
This is my first capacitor meter that does a lead test first, shorted and open, then subtracts the measured capacitance from the device under test measurements. Sencore was high end for the service technician's workbench, still have several of there scopes in service.
Still hanging on to the old bridges and meters out of nostalgia, but will probably start selling them to make space pretty soon, including some ESI universal impedance racks.
The 34470A does a lot of things better, but not everything. ACAL every day, sometimes several times, it does drift with temperature. Using 34470A to test 1G Ohm resistors overnight has given me renewed confidence in my ESI Precision Resistance Measurement system for high R values, it comes really close and it only takes 30 seconds. That rack is a keeper.
George Dowell
mr.fabe:
--- Quote from: HighVoltage on August 06, 2019, 07:12:38 pm ---
--- Quote from: mr.fabe on August 06, 2019, 06:28:53 pm ---Powersonic batteries work with clip with adapter plug.
--- End quote ---
Interesting,
Do you have a link to that battery?
I see some batteries on ebay for around 70 US$
Are they worth it?
--- End quote ---
Not worth it.
Powersonic PS-1223 2.3 Amp Hr works for my LC103
I'll have to check for the links...
coromonadalix:
battery specs: 12vdc at 2.3 amps
https://cdn.shopify.com/s/files/1/2694/4298/files/PS-1223_SPEC_SHEET.pdf?16089243122879519379
Length:
7.17" (182mm)
Width:
0.94" (24mm)
Height:
2.40" (61mm)
They ressemble old portable camera and camcorder pack ?? Around 55$ CAD in my country
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