Texas TI-59: A tale in pictures

[jebem]

Hi Alberto,

I use a laboratory variable voltage power supply for that. These equipments can be bought at low cost these days at hardware electronics shops. My latest acquisition from a local shop goes from 1v to 15vdc and current limiting from 2amp to 0.1amp if my memory serves me well.

But you may take measurements in circuit as the internal impedance of the coils is very low compared with the imposed load of the input network used in the amplifiers. A small decrease in the signal is expected, as long as it is not much smaller than the nominal values indicated in the service manual.