Difference between revisions of "Tools"

From Thermionic Studios
Jump to: navigation, search
m
m
 
(3 intermediate revisions by the same user not shown)
Line 1: Line 1:
Here is a list of tools that a tube amp tech typically uses in the process of building / testing / troubleshooting tube amps in order to get them to peak operation.
+
Here is a list of tools that a tube amp tech typically uses in the process of building / testing / troubleshooting tube amps in order to get them to peak operation.  
  
Unlike our usual practice of listing items in alphabetical order, we're going to list out the tools in order of technical sophistication. Unless you have tube amps that are multi-channel and have midi functionality, a tech typically only needs rather rudimentary tools.
+
* [[Schematic]]: This is a diagram of the topology of the circuit in the amplifier. Using a schematic is almost always necessary when working on an amp so that the tech can refer to it and understand how the current is flowing through each part of the amplifier s/he is working on.
 
+
* [[Chopstick]](s): Wooden, acrylic, or plastic (non-conducting) probe (basically a stick) to safely move wires in an amp chassis to help determine possible interferences of signal running across the wires that may be inadvertently created by the in-chassis wiring.
* Schematic: This is a diagram of the topology of the circuit in the amplifier. Using a schematic is almost always necessary when working on an amp so that the tech can refer to it and understand how the current is flowing through each part of the amplifier s/he is working on.
+
* [[Capacitor Drain Jumper]]: Alligator clips that have been modified with a resistor that are used to drain otherwise dangerous high-voltage filter capacitors.
* Chopstick(s): Wooden (non-conducting) probe (basically a stick) to move wires in an amp chassis to safely help determine signal interferences running on the wires that may be created by the existing in-chassis wiring.
+
* [[Digital Multimeter]]: Also called "Digital Voltmeter", this is a digital version of the Vacuum Tube Voltmeter, with a much higher degree of granularity. It also tends to offer more numerous functions and tests that a simple VTVM cannot match.
* Capacitor Discharge Jumper: Alligator clips that have been modified with a resistor that are used to drain high-voltage filter capacitors.
+
* [[Vacuum Tube Voltmeter]]: Uses a vacuum tube to obtain and display electronic measurements.
* DMM / DVM: Digital Multimeter / Digital Voltmeter
+
* [[Signal Generator]]: Generates a tonal sine wave (a musical note) that is fed into an amplifier, or pedal, for testing or tube biasing.
* VTVM: Vacuum Tube Voltmeter
+
* [[Variac]]: Variable AC Transformer
* Signal Generator: Generates a tonal sine wave (a musical note) that is fed into an amplifier.
+
* [[Tel-Ohmike TO-10]]: Capacitor Tester
* Variac: Variable AC Transformer
+
* [[Sencore PR57]] "Powerite": An isolation transformer for testing possible ground loops - also useful for reforming old electrolytic capacitors.
* Tel-Ohmike TO-10: Capacitor Tester
+
* [[Tektronix 422]]: A particular model of oscilloscope we have here at Thermionic Studios
* Sencore PR57 "Powerite": An isolation transformer for testing possible ground loops - also useful for reforming old electrolytic capacitors.
+
* [[Tektronix 456]]: Another oscilloscope that we have and probably don't need
* Teltronix 422 Oscilloscope: A particular model of oscilloscope we have here at Thermionic Studios
+
* [[Lightbulb Limiter]]: A rudimentary "variac" that uses the wattage rating of a lightbulb to limit the amount of current going to an amplifier, and uses the function of the lightbulb to also indicate when the filter capacitors have "filled" with electrical charge.
* Teltronix 456 Oscilloscope: Another oscilloscope that we have and probably don't need
+
* [[Speaker Load]]: Also known as a "Dummy Load", this tool consists of a resistive network that acts like a speaker and can take an amplifier's full output without generating any sound.
* Lightbulb Limiter: A rudimentary "variac" that uses the lumens and wattage of a lightbulb to both limit the amount of current going to an amplifier, and to also indicate when the filter capacitors have "filled" with electrical charge.
+
* [[Bias Probe]]: Used to measure the bias current to one or more power tubes to make sure that they have been biased to the desired rating.
* Speaker (Dummy) Load: A resistive network that acts like a speaker and can take an amplifier's full output without generating any sound.
 
* Bias Probe: Used to measure the bias current to one or more power tubes to make sure that they have been biased to the desired rating.
 

Latest revision as of 16:54, 24 May 2018

Here is a list of tools that a tube amp tech typically uses in the process of building / testing / troubleshooting tube amps in order to get them to peak operation.

  • Schematic: This is a diagram of the topology of the circuit in the amplifier. Using a schematic is almost always necessary when working on an amp so that the tech can refer to it and understand how the current is flowing through each part of the amplifier s/he is working on.
  • Chopstick(s): Wooden, acrylic, or plastic (non-conducting) probe (basically a stick) to safely move wires in an amp chassis to help determine possible interferences of signal running across the wires that may be inadvertently created by the in-chassis wiring.
  • Capacitor Drain Jumper: Alligator clips that have been modified with a resistor that are used to drain otherwise dangerous high-voltage filter capacitors.
  • Digital Multimeter: Also called "Digital Voltmeter", this is a digital version of the Vacuum Tube Voltmeter, with a much higher degree of granularity. It also tends to offer more numerous functions and tests that a simple VTVM cannot match.
  • Vacuum Tube Voltmeter: Uses a vacuum tube to obtain and display electronic measurements.
  • Signal Generator: Generates a tonal sine wave (a musical note) that is fed into an amplifier, or pedal, for testing or tube biasing.
  • Variac: Variable AC Transformer
  • Tel-Ohmike TO-10: Capacitor Tester
  • Sencore PR57 "Powerite": An isolation transformer for testing possible ground loops - also useful for reforming old electrolytic capacitors.
  • Tektronix 422: A particular model of oscilloscope we have here at Thermionic Studios
  • Tektronix 456: Another oscilloscope that we have and probably don't need
  • Lightbulb Limiter: A rudimentary "variac" that uses the wattage rating of a lightbulb to limit the amount of current going to an amplifier, and uses the function of the lightbulb to also indicate when the filter capacitors have "filled" with electrical charge.
  • Speaker Load: Also known as a "Dummy Load", this tool consists of a resistive network that acts like a speaker and can take an amplifier's full output without generating any sound.
  • Bias Probe: Used to measure the bias current to one or more power tubes to make sure that they have been biased to the desired rating.