US 11,940,480 B2
Functional test head for printed circuit boards
Pramodchandran Variyam, Plano, TX (US); and Avinash Virupakshaiah Pura, Allen, TX (US)
Assigned to Anora, LLC, Richardson, TX (US)
Filed by Anora, LLC, Richardson, TX (US)
Filed on Oct. 14, 2022, as Appl. No. 17/966,535.
Claims priority of provisional application 63/270,040, filed on Oct. 20, 2021.
Prior Publication US 2023/0120501 A1, Apr. 20, 2023
Int. Cl. G01R 31/28 (2006.01)
CPC G01R 31/2803 (2013.01) [G01R 31/2808 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a test head frame;
a tray slidably coupled to the test head frame and configured to receive a first printed circuit board (PCB) to be tested, wherein the first PCB is to be positioned within the test head frame when the tray is in a retracted position and the first PCB is to be positioned outside the test head frame when the tray is in an ejected position;
a bed of nails opposing a lower side of the first PCB, the bed of nails including a plurality of pins having first portions arranged on an upper side of the bed of nails to connect with corresponding electrical pads on the lower side of the first PCB when the tray containing the first PCB is in the retracted position; and
a plurality of interface printed circuit boards (PCBs) configured for connection to second portions of the plurality of pins exposed on a lower side of the bed of nails, the plurality of interface PCBs configured to receive test signals from test instruments when the tray containing the first PCB is in the retracted position.