Printed circuit tester housing test contacts - has sealed diaphragm pressed down on to board to ensure connection with contact pins

摘要

The printed circuit tester includes a rigid metal frame (3) which may be attached to a work surface (2) on top of which a further section houses the electrical terminals making contact with the circuit board. A locking lever (7) is arranged to clamp the lower two sections together, whilst a clamp mechanism on the uppermost part of the frame (10) holds the upper part of the frame together. On the top surface of the upper frame section (6) of the rectangular frame is a flexible diaphragm. The circuit to be tested is held beneath the diaphragm pressing down on to the test contacts. By evacuation of the space under the diaphragm, pressure is applied to the upper surface of the circuit board to urge it against the test contacts. Connection wires from the test contacts are fed out of the back of the lower part of the rigid rectangular frame.