Battery Connection Terminal

Discharge Timer

This device provides a 5-second controlled discharge for a custom battery when triggered by a pushbutton. The maximum current is 100mA. The discharge circuit is to be isolated from the power source. Power from AA batteries is acceptable.

The would like one prototype in one week (by 5/7/12) and potentially 4 more units later. We agree that the first prototype would be hand-wired in an aluminum Bud box.

• Schematic – ​Timer1.pdf • ​Timer1.sch
• ​555 Monostable Relay

PCB Layout

Schematic and PCB layout was done in ExpressPCB and put ​here

• ​Timer.pcb
• ​Timer.sch
• ​Timer.csv