Transistor Devices Inc.

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This Transistor Devices Incorporated Dynaload model DLVP 130-250-2500 DC Electronic Loads are capable of handling 130 volts across it, 250 amps of current through them at power levels of up to 2500 watts each. The unit can be used to have pulsed load functions with variable frequency and on time, also to simulate a resistor with A/V function. It can be used as ashort and it can be programmed externally. These are all in very good condition. All switches, meters and controls function as designed to. These units are not NIST calibrated; however, the meters are accurate when I measured the voltage externally with a digital multimeter and the current was accurate while monitoring with a shunt at up to 150 amps. I have no supply powerful enough to test it at higher current levels, so I would suggest having the unit calibrated, The DC Load ON/OFF LED is missing so it does not illuminate when the load is turned on to draw current. The units cosmetically are all about an 92 on a scale to 100. These are rock solid sound workhorses and are being sold guaranteed to function.

This TDI Transistor Devices Inc. DLF 100-100-750 has been fully tested and works very well, It is capable of drawing up to 100 amps of current, having 100 Vdc applied across its’ input terminals for a maximum combined power of 750 watts. This is a very nice little easy to use electronic DC load that does not take up  to much bench space, is light in weight and easily transported for quick setup. It has settings for current, amps per volt, and pulsed current. The pulsed current can be adjusted by frequency as well as duty cycle. It can also be used in a shorted mode for supplies providing less than 100 amps and less than 750 watts of power of course. It has a good strong fan and the voltage and current readings were relatively accurate. Current was a little off when compared to a current shunt, so you may want to get it calibrated; but that is up to your disgression.

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This  Transistor Devices Incorporated, TDI Dynaload, RBL 488-50-1000-4000 DC electronic load is capable of having up to 50Vdc across its terminals and loading up to 1000 amps of current for a maximum of 4000 watts of power consumption.

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This TDK-Lambda GEN 40-19 750 watt Programmable DC Power Supply is in very good condition and was load tested. It produced accurate voltage and current as well as readbacks.

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This Transistor Devices Incorporated DLP 130-50-2500 has been tested and works fine. It is capable of having 130 Volts DC across it’s input terminals, drawing 50 amps of current for a combined maximum power of 2500 watts. What you see in the photos is what you get. It is a nice old school unit that is robust and easy to use.

Out of stock

This TDK-Lambda GEN 40-38 1500 watt Programmable DC Power Supply is in very good condition and was load tested. It produced accurate voltage and current as well as readbacks. It may need alignment/calibration.

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