General Electric

7233

35.00 USD

Fine 9 pin miniature triode voltage regulator tubes manufactured in the United States by renowned General Electric. These tall glass tubes, with long gray plates and top halo getters, are designed for high current series voltage regulator service in compact power supplies. 1970’s production, they are printed in white with GE logo, ELECTRONIC TUBE 188-5 MADE IN U.S.A. indicating Owensboro Kentucky origin, and glass etched 7233 U.S.A. with dot code. Boxes are standard GE orange and gray. Photo is typical of available inventory.

Condition

New Bulk
New Old Stock (New in box)

	Tube Matching 6.00 USD by tube
LEARN MORE WHY ? A tube may have one, two, or three internal sections depending on the purpose of the tube; somtimes these sections are all the same, sometimes they are different. Due to manufacturing and material tolerances, there may be slight differences between the original specification and the actual tube. Tube matching tests each one of these internal sections and selects tubes, compared to original specifications at manufacture, for balanced performance and good sound. HOW ? All our tubes are tested by us prior to packing on our Stark, AVO, Simpson or RF Laboratories Inc. calibrated testers. On request for tube matching, tubes are matched for Mutual Conductance in Micromhos and Plate Current in Milliamps on our Amplitrex or Radioelec Duovac testers, with results printed for each individual tube. Certain tubes difficult to test are matched for Mutual Conductance in Micromhos only on one of our regular calibrated testers. On request we can also test for Microphonics.