I bought 2 to repair my Waveform Generator, being of a suspicious nature I tested them in a breadboard with a 80mA current limited power supply. The supply pins would not rise above about + and - 0.8V. I suspected that these could be a different device remarked as MAXIM so I tried +5V on pin 20 and 0V on pin 10- typical logic supplies. Under these conditions the device draws about 4mA. On a genuine MAX038 connected like this the supply voltage is limited to 0.8V by I suspect a substrate diode.
Other bad buys on Ebay from far east suppliers include-
Low capacity Lithium cells listed as high capacity.
IRF1404 Power Mosfets with higher ON resistance than specified by IR
Constant Current LED power supply- half specified current
Kurke
Other bad buys on Ebay from far east suppliers include-
Low capacity Lithium cells listed as high capacity.
IRF1404 Power Mosfets with higher ON resistance than specified by IR
Constant Current LED power supply- half specified current
Kurke