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uln-power-supply

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uln-power-supply [2016/02/11 17:49]
karl angelegt
uln-power-supply [2017/04/04 06:45] (aktuell)
karl [OSH-Park]
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 ====== Ultra Low Noise Linear Power Supply, using LT3042 ====== ====== Ultra Low Noise Linear Power Supply, using LT3042 ======
 +{{  :uln-supply:3d-top.png?direct&300|}}
  
-Small power regulator pcb, with AC inputs and DC output. +Small power regulator PCB, with AC inputs and DC output.  
 +  * 78xx as a pre-regulator, to reduce power loss on the LT3042 and to increase the max. input voltage
   * Output voltage: 0-15V   * Output voltage: 0-15V
   * Output current: max. 200mA   * Output current: max. 200mA
   * Input voltage: max. 20VAC   * Input voltage: max. 20VAC
  
 +===== Setting the Voltage =====
 +The LT3042 has a very nice way to set the output voltage. 
 +Instead of using an internal voltage reference and an external voltage devider, a constant current is driven through a user settable resistance, which is then the reference voltage!
  
- +  U_out = 100uA * R1||R2 
-{{  :uln-supply:3d-top.png?direct&300|}}+e.g. with R1||R2 = 50kΩ, U_out = 5V
  
 ===== Schematic ===== ===== Schematic =====
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 ===== KiCad project ===== ===== KiCad project =====
 {{:uln-supply:uln-power-supply-kicad.7z|}} {{:uln-supply:uln-power-supply-kicad.7z|}}
 +
 +===== OSH-Park =====
 +You can directly order this PCB from oshpark.com
 +
 +<html>
 +<a href="https://oshpark.com/shared_projects/uWxyBEL1"><img src="https://oshpark.com/assets/badge-5b7ec47045b78aef6eb9d83b3bac6b1920de805e9a0c227658eac6e19a045b9c.png" alt="Order from OSH Park"></img></a>
 +</html>
 +
 +{{tag>english article product electronics noise technical}}
uln-power-supply.1455209362.txt.gz · Zuletzt geändert: 2016/02/11 17:49 von karl