US 11,953,305 B2
Detonator installation including a controller
Michiel Jacobus Kruger, Johannesburg (ZA)
Assigned to DETNET SOUTH AFRICA (PTY) LTD, Johannesburg (ZA)
Appl. No. 17/426,321
Filed by DETNET SOUTH AFRICA (PTY) LTD, Johannesburg (ZA)
PCT Filed Jan. 23, 2020, PCT No. PCT/ZA2020/050004
§ 371(c)(1), (2) Date Jul. 28, 2021,
PCT Pub. No. WO2020/163883, PCT Pub. Date Aug. 13, 2020.
Claims priority of application No. 2019/00727 (ZA), filed on Feb. 4, 2019.
Prior Publication US 2022/0099421 A1, Mar. 31, 2022
Int. Cl. F42C 11/00 (2006.01); F42D 1/045 (2006.01)
CPC F42C 11/008 (2013.01) [F42D 1/045 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A detonator installation including control equipment, the control equipment comprising:
a controller;
a voltage source, an inductor and a switch connected in series with the voltage source;
output terminals; and
at least one detonator including a capacitor and at least one protective diode, the capacitor and the at least one protective diode being connected in series to the output terminals;
wherein the controller is operable repeatedly to close the switch, thereby to direct current from the voltage source through the inductor which then establishes a magnetic field, and to open the switch so that the magnetic field collapses and generates a current which flows via the output terminals through the capacitor and the diode thereby to charge the capacitor.