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Solid State DC timer

Solid State Adjustable DC Timer Kit

by Galak Electronics
Part No. VG-301B
Shipping Weight: 1.0 ounce (27 grams)

Incorporate reliability into your projects with this high powered adjustable solid state timer. Integrated snubbing circuitry allows for switching of both resistive and inductive loads up to 10A*, and dual trim pots provide precision controlled delays from 15 seconds up to 120 minutes**.

The unassembled kit includes instructions (including schematic and parts placement) and all the components to build one complete Solid State Adjustable DC Timer. A soldering iron, solder and a pair of cutters are required for assembly.

Solid State Adjustable DC Timer Kit:



Solid State Adjustable DC Timer
(Built and Tested):




  • User selectable time delay up to 120 minutes** with coarse and fine adjustments.
  • Operates in either asynchronous mode or single shot with fully debounced input.
  • 6VDC or 60VDC output at 10A max* with 4 terminal connector for easy inline integration.
  • Wide input supply voltage from 6 to 30VDC and supply current of only 10mA with output energized.
  • Green LED to indicate when output is active.
      * Maximum current rating is at 212F (100C) ambient. Heat sinking is required for average loads exceeding 5A.
      ** Standard maximum time delay is 30 minutes. Replacement capacitors (at additional cost) can be substituted for extended delays.


  • Supply Voltage: 6VDC to 30VDC @ 10mA
  • Output Rating: 6-60VDC @ 10A max* (Non-repetitive surge current 50A max)
  • Output Connector: 14-26AWG, 100VDC @ 16A
  • Delay Range: VR1: 15-50 seconds, VR2: 1-30 minutes
  • Board Dimensions: 3.11" x 1.61" (7.90 cm x 4.10 cm)
  • Board Material: 0.062" (1.6 mm) FR-4, with yellow solder mask and top layer silk screen
  • Finished Weight: 1.0 ounce (27 grams)

Please feel free to contact us if you have any question about this project or any othe Galak Electronics Projects.

Copyright 2013 by Galak Electronics. All rights reserved.