Category Archives: Bridges and component testers

ESI 250DE LCR Bridge

This is a 0.1% portable LCR bridge made by ESI and it is probably made somewhere in the 60’s. As to expect from a brand like ESI it is still spot-on. ESI is most known for their calibration gear and … Continue reading

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Duoyi DY294 component and isolation tester

Video review This is a small battery powered transistor tester but it can do more. It can test Vbr, hFE, Vce sat and  Iceo. It can test transistors, fets, diodes, leds, zeners, SCR, isolation of MOVs, capacitors, etc hFE, also … Continue reading

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B&K precision programmable IC tester 560

This is the B&K Pecision 560 IC tester. I do not know the history. It is build around 1986 (that is the date code on the most ICs) That time area was the rise of the computers. Everything became digital … Continue reading

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Hameg HM8018 LCR meter

This LCR meter was about 2 weeks old when it was killed by a charged capacitor. That was 15 years ago and in that state it was given to me. It is a plugin for the 8001 system.  I have … Continue reading

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Wayne Kerr CT-492 LCR meter

I got this LCR meter from a friend who bought it. But it did work like it should. Because he needed a LCR meter I gave him my marconi TF1313. It was made for the navy and is based on the B-421. It … Continue reading

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GR-900 LB slotted line

This is the GR-900 LB user manual (20 MB, over 80 pages in high res. Scanned by Guy,  who also has a GR-900 LB. The user manual for this slotted line is rather rare so I placed it on my … Continue reading

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Metrix transistor tester 301B

One of the most beautifull transistor testers I have ever seen. This must have been an expensive instrument. It was a gift from Circuits online member Blackdog. It is even more special because it is very complete. In the box … Continue reading

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GR-1602B VHF/UHF admittance meter

In the time befor VNA’s were invented there were instruments to measure things like antennas at high frequencies. General radio made this ” bridge”  for that purpose. It is not realy a bridge but because it uses a zero detector, … Continue reading

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ESI 277 capacitance bridge

  This nice bridge was a gift from my friend Arnold. It is a capacitance bridge and made in august 1963. It is rackmount and I once have seen a B&W picture of one in a 19″ rack together with … Continue reading

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GR-1603 ZY bridge

    Thanks to my friend Ken for finding this beautifull bridge and sending it from the states to here. The nice pictures are made by Ken who even cleaned the unit before shipping. The GR-1603a was introduced in 1955. … Continue reading

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IET Labs DE-5000 portable LCR meter

IET labs is a company that makes the best LCR meters in the world. They however are by many people known under an other name, Genrad or General Radio. IET was the bridge department of GR. They still produce several … Continue reading

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Boonton 63H self-inductance bridge

This wonderfull bridge is from the Boonton electronics company. This is not the company that was bought by HP and made Q meters. That was the Boonton Radio Company. They were two of the many electronic companys in Boonton. It … Continue reading

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GR-1650B Impedance Bridge

This LCRG bridge is portable and powered by 4 D-cell batteries. It is a nice small enclosure. It looks a lot bigger on the picture. The lid of the box has 4 anti-slip feed and the bridge can be placed in … Continue reading

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General Radio GR1608A

The GR1608 is a 0.1% LRCG LF bridge. The G stand for conductance. So this bridge houses several bridges in one. That is why they named it impedance bridge. A C-series, C-parallel, L-series, L-parallel (L from 50nH upto a bizar … Continue reading

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General Radio GR-1620A capacitance ratio bridge

For a femto-Farad hunter like me this is the holy grail of capacitance measuring. There exists a model above this whit even higher specs but they are very rare. This bridge was upto 2002 used by Martron a ukas-lab in the … Continue reading

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HP-4260A LCR meetbrug

Dit is een HP uit 1966. Deze meter werd in 65/66 geintroduceerd en het byzondere was voor die tijd dat hij een auto mode had. Bij een meetbrug moet je meestal meerdere knoppen verdraaien die elkaar beinvloeden. Een zogenaamd sliding … Continue reading

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Tektronix 130 LC meter

Het byzondere van deze meter is dat hij werkt op een wat afwijkende manier. En dat hij gemaakt is voor een beperkt gebied. De gevoeligste schaal is 0-3 pF, de grootste 0-300pF. De zelfde waarden bij spoelen maar dan in … Continue reading

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Tektronix 576, king of the curvetracers.

The Tektronix 576 was in that time so expensive that it did not sell in big numbers. That is why they made the 577. There is not a huge difference. The 576 is wider , has a readout and I … Continue reading

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Vu-data 3110 in circuit component tracker

This tracker I got from a friend who replaced the CRT but had no time and interest to make it work again. A tracker is a sort of curvetracer (CT). They are also named octopus or component tester. Most Hameg … Continue reading

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Tektronix 577-177 curvetracer

Dit is de Tektronix 577 mainframe met 177 curvetracer plugin. Deze kan halfgeleiders zoals FET’s, torren, diodes, zeners, trystors enz testen met spanningenen tussen de 0 en 1600V en stromen tot 20A. Verticaal geeft hij de stroom met een resolutie … Continue reading

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Heathkit CT1 condensatortester

Deze Heathkit heb ik gekocht op de beurs in rosmalen. Er zat een gewoon nederlands snoer aan . Hij bleek echter 110V te zijn. Let dus altijd op bij dit soort aankopen. Die stekker is er niet vanzelf aangekomen en … Continue reading

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Transistor testers

The black  PP3000 is dated 1955,  the grey PM6501 is from 1960. Both are Philips. Philips produced in their NAT-lab 1949 their first transistor. In 1952 Philips made an agreement with Bell labs (the inventor of the transistor). In 1953 … Continue reading

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Marconi TF1313a LCR meetbrug

Dit is een erg mooi en goed meet apparaat. Het kan alles met spoelen, weerstanden en condensators. Tot Q en D meten toe. Helemaal origineel en compleet. Ik heb  hier een PdF manual van.  Het is wat te groot om … Continue reading

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R&S LCR meters

Zo schattig maken ze ze niet meer en dan met de voor duitse begrippen frivole benamingen: LARU en KARU. Beide waren defect toen ze in mijn weeshuis belanden. Zoals meestal het geval was het ook dit keer een kleinigheid. Ze … Continue reading

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