US 12,405,317 B2
Leak detection device and associated electrical power supply
Thierry May, Les Clayes-sous-bois (FR)
Assigned to ATEQ, Les Clayes sous Bois (FR)
Appl. No. 18/027,750
Filed by ATEQ, Les Clayes-sous-bois (FR)
PCT Filed Sep. 22, 2021, PCT No. PCT/EP2021/076057
§ 371(c)(1), (2) Date Mar. 22, 2023,
PCT Pub. No. WO2022/063824, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 2009772 (FR), filed on Sep. 25, 2020.
Prior Publication US 2023/0375640 A1, Nov. 23, 2023
Int. Cl. G01R 31/52 (2020.01); G01R 31/14 (2006.01); G01R 31/16 (2006.01)
CPC G01R 31/52 (2020.01) [G01R 31/14 (2013.01); G01R 31/16 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A leak detection device, said device comprising:
a space intended to receive a part to be tested;
at least two electrodes disposed on either side of said space;
a direct-current electrical power supply supplying at least one of said electrodes with an output voltage; and
a current detector configured to measure current generated by a voltage difference between said electrodes, wherein said electrical power supply is a power supply comprising:
a transformer having a primary with a midpoint;
a transistor connected to said midpoint of said transformer;
switches whose succession of openings and closures has a duty cycle and enables a transmission of energy through the transformer; and
at least one regulation circuit regulating a value of the duty cycle and a voltage supplying a base of said transistor.