LKB/Bromma electrophoresis supplies, at least all I have come across, have optical sensors inside that go across all the output connectors. LKB connector wires have a long plastic end that blocks the optical sensor and triggers the output on when the cables are fully plugged in. On mine, I went in and bypassed all the sensors by covering them with heat shrink tubing. These supplies work well, but be very careful with them. I found an operating manual for my 2197, but service data for LKB equipment is very scarce. The company that bought LKB out did not retain nor make any legacy equipment service data available. -Mark- _________________ My Current Projects.
LKB Bromma 12000 Varioperpex Peristaltic Pump 115V, LKB Bromma 2301 MacroDrive 1 Power Supply, LKB Bromma 2197 Electrophoresis Power. General Description. The LKB 2197 is an electrophoresis power supply. It can provide an adjustable voltage output from 10 to 2500V DC, 1 to 250mA, and 0 to 100W. LKB 2103 Electrophoresis Power Supply. LKB 2103 Electrophoresis Power Supply Schematic. I found an operating manual for my 2197, but service data for LKB.
I only have one electrophoresis power supply, but it has another safety feature to be aware of. It is a LKB-ECPS3000-150. That is 3KV and 150 Watts. 'Leakage' can shut down the output, on mine there is a red led that goes on when the ps is cut-off due to leakage. In this case, leakage is 'ground fault current' detected as the difference between the current out the positive terminal vs. The current in at the negative terminal. The power supply has an internal center-tap tied to ground.
The intended electrophoresis cell loads are expected to be floating from ground. Indiana Jones Monthly 10 .cbz - Free Software And Shareware. I can't blame them for having all these safety features; considering they are for use on 'wet bar' biology lab benches. Logitech Fc Camera Treiber on this page.
_________________ Ex: Same job, same building, same phone #; 4 Corp's: RCA, GE, Martin, Lockheed-Martin: 48 years. I figured out what the problem is! There is an interlock connector on the rear panel. It has a red and black wire. I measured 1 Vdc on the red and the black is grounded. I shorted the red to black with a 220 ohm resistor, but nothing happened. I shorted my meter probe across them and got some output.