Battery Powered Exploder

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Automatic firing is achieved by holding the key in the fire position until the detonator fires. When the key is released any residual charge left in the capacitor is discharged through a resistor.

The exploder becomes automatically safe if the key is removed at any time. A neon indicator flashes to indicate that firing has taken place.

 

Arbra Data Sheet mk23 mk30
Minimum capacitance 20 200
Maximum fire voltage (vdc) 105 130
Maximum charging time (sec.) 2 3
Minimum fire charge (joules) 0.11 1.69
Maximum time to be safe after firing switch released (sec.) 5 5
Battery (alkaline) pp3 pp3
Weight (kgs) 0.5 0.5