Category Archives: Bridges and component testers

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 →

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 →

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 →

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 →

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 →

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 →

  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 →

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 →

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 →

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 →

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 →

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 →

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 →

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 →