EARLY TRANSISTOR HISTORY AT RCA

Gerald B. Herzog First Transistor Television

Oral History (Continued)

 

 

 

 

The circuitry of the historic transistor television receiver was documented on a schematic drawing, dated October 9, 1952. It is interesting to note that this date is only four years after the first public announcement of the invention of the transistor by Bell Labs (June 1948). The title block of the schematic is shown in the scan to the left. The top scan shows a section of the circuit from the schematic, which was drawn to indicate the transistor types used (for example, TA 153 and TA 154), as well as the functionality of the specific part of the circuit (Audio, in this case). A total of 37 transistors were used in the design, and these were all developmental types produced by RCA to demonstrate the potential of transistor technology in actual circuit applications. The table to the left lists the actual types and quantities of the transistors used in the TV.

 

 

 

 

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Go To Herzog Oral History, Page 14

 

 

 

 

TRANSISTOR TYPES AND FUNCTIONALITY

USED IN THE FIRST TRANSISTORIZED TV

 

Total Transistor Count: 37

 

TA153 - 12 (PNP Alloy Junction, Low Freq)

TA154 - 2 (NPN Alloy Junction, Low Freq)

TA155 - 4 (PNP Alloy Junction, Low Freq Power)

TA155A - 2 (PNP Alloy Junction, Low Freq Power)

TA156 - 1 (NPN Alloy Junction, Low Freq Power)

TA165 - 2 (Point Contact, Switching up to 10MHZ)

TA166 - 13 (Point Contact, Switching, 10 to 30MHZ)

TA172 - 1 (Point Contact, Switching at 50 MHZ)

 

 

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