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131: Difference between revisions
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{{Instrument Sidebar | {{Instrument Sidebar | ||
|manufacturer=Tektronix | |manufacturer=Tektronix | ||
|model=131 | |model=Type 131 | ||
|class=Amplifier | |class=Amplifier | ||
|series= | |series= | ||
|summary=Current Probe Amplifier | |summary=Current Probe Amplifier | ||
|image=Tek 131 front.jpg | |image=Tek 131 front.jpg | ||
|caption=Type 131 Current Probe Amplifier | |caption=Type 131 Model 4 Current Probe Amplifier | ||
|for=P6016 | |for=P6016 | ||
|introduced=1960 | |introduced=1960 | ||
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All four Type 131 Models used PNP transistors, thus requiring a negative power source. Models 1 thru 3 were hard-wired to their separate minus 19 V power supplies, while Model 4 got a power supply, 015-027, with a proprietary Tektronix coaxial connector. The center pin of the Type 131 Model 4 power supply connector is grounded, so the outer contact is ~19 V negative. Note that the 015-0058-01 power supply for the Type 134 uses the same connector with the same relative voltage levels (center conductor ~19 V more positive than the outer contact) but the negative outer contact on the Type 134 power supply is held close to ground. So the Type 131 Model 4 will only work with the correct 015-027 Power Supply. | All four Type 131 Models used PNP transistors, thus requiring a negative power source. Models 1 thru 3 were hard-wired to their separate minus 19 V power supplies, while Model 4 got a power supply, 015-027, with a proprietary Tektronix coaxial connector. The center pin of the Type 131 Model 4 power supply connector is grounded, so the outer contact is ~19 V negative. Note that the 015-0058-01 power supply for the Type 134 uses the same connector with the same relative voltage levels (center conductor ~19 V more positive than the outer contact) but the negative outer contact on the Type 134 power supply is held close to ground. So the Type 131 Model 4 will only work with the correct 015-027 Power Supply. | ||
Using the wrong power supply with either amplifier | Using the wrong power supply with either amplifier Type will short circuit the power supply output. Tektronix claims that this will not damage the Type 134 power supply (015-0058-01) if connected to a Type 131. Damage to the Type 131 power supply (015-027) seems likely if it is connected to a Type 134. | ||
Power supplies for Type 134s are labeled "POWER SUPPLY FOR TYPE 134", while those for Type 131 Model 4s have no marking other than Tektronix and 015-027. In addition, all Type 131 power supplies have the AC line connector built onto the end of the power supply housing, while the 134 power supplies came with a ~3' AC line cord and plug. | Power supplies for Type 134s are labeled "POWER SUPPLY FOR TYPE 134", while those for Type 131 Model 4s have no marking other than Tektronix and 015-027. In addition, all Type 131 power supplies have the AC line connector built onto the end of the power supply housing, while the 134 power supplies came with a ~3' AC line cord and plug. | ||
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Tek 131 side.jpg | Type 131 Model 4 Side View | Tek 131 side.jpg | Type 131 Model 4 Side View | ||
Tek_p6016_131_2.jpg | Type 131 Model 3 with P6016 | Tek_p6016_131_2.jpg | Type 131 Model 3 with P6016 | ||
Tek 131 schem.png|Schematic, Models 1-3 | Tek 131 schem.png|Type 131 Schematic, Models 1-3 | ||
Tek 131 early 1.jpg|Type 131 Model 3, with attached power supply | Tek 131 early 1.jpg|Type 131 Model 3, with attached power supply | ||
Tek 131 early 2.jpg|Type 131 Model 3 | Tek 131 early 2.jpg|Type 131 Model 3 | ||