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university:courses:tutorials:alm-awg-external-power [21 Oct 2021 15:32] – [Objective:] Doug Merceruniversity:courses:tutorials:alm-awg-external-power [05 Apr 2022 21:08] – [Directions:] Doug Mercer
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 ====Directions:==== ====Directions:====
  
-The first and simplest configuration for the LT1054 is the voltage inverter shown in figure 3.1. It can generate -5 V from the +5 volt power supply using just two capacitors. C<sub>1</sub is typically 10 uF and C<sub>2</sub can be anything larger than 47uF. When using electrolytic capacitors be sure to observe the polarity and connect the capacitor with the correct polarity. If connected backward, at best the circuit won't work, at worst you can damage either the capacitor or LT1054.+The first and simplest configuration for the LT1054 is the voltage inverter shown in figure 3.1. It can generate -5 V from the +5 volt power supply using just two capacitors. C<sub>1</sub is typically 10 uF and C<sub>2</sub> can be anything larger than 47uF. When using electrolytic capacitors be sure to observe the polarity and connect the capacitor with the correct polarity. If connected backward, at best the circuit won't work, at worst you can damage either the capacitor or LT1054.
  
 {{ :university:courses:tutorials:ext-power-fig-3-1.png?500 |}} {{ :university:courses:tutorials:ext-power-fig-3-1.png?500 |}}
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 ====Making the output adjustable==== ====Making the output adjustable====
  
-The negative output voltage can be adjusted from approximately 0 to –5 V by adding a potentiometer circuit as shown in figure 3.2. Resistor R<sub>1</sub> is 10 KΩ, resistor R<sub>2</sub is 20 KΩ and potentiometer R<sub>POT</sub is 50 KΩ. Noise filter capacitor C<sub>3</sub is 0.01 uF.+The negative output voltage can be adjusted from approximately 0 to –5 V by adding a potentiometer circuit as shown in figure 3.2. Resistor R<sub>1</sub> is 10 KΩ, resistor R<sub>2</sub is 20 KΩ and potentiometer R<sub>POT</sub is 50 KΩ. Noise filter capacitor C<sub>3</sub> is 0.01 uF.
  
 {{ :university:courses:tutorials:ext-power-fig-3-2.png?600 |}} {{ :university:courses:tutorials:ext-power-fig-3-2.png?600 |}}
university/courses/tutorials/alm-awg-external-power.txt · Last modified: 13 May 2022 22:27 by Doug Mercer

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