1.4.10.4 - Various equipment and tools

Description

• A small and handy EPROM UV eraser from isel (ISEL-5).
• The original power supply was lost/broken so instead we are using the Mascot 696
• The eraser was not working, will not turn on at all.
• The eraser was open and after some investigation I found that it was the lid switch that was defect.
  I could just replace the switch, but instead I open it and found that it was heavily corroded.
  The switch was disassembled and all the parts were cleaned before being reassembled and it works perfectly.
• Print: _   ECO: _
• PCB size 152 x 61 mm, 1 layer
• The box size 155 x 75 x 42 mm
• Release date xx. xxx. xxxx

Chipset

• NE555 - Timer
• BD939 - Power Transistor

LEDs

• Running (green)

Straps

• None

Switches

• Start
• Timer (1-10), from approx 1 min to 30 min.

Connectors

• External power, 12V DC