Abstract: A multipurpose spacer having a spacer body with a ground lead, an inner electrical connection, and an outer electrical connection. The multipurpose spacer provides grounding, securing, and low thermal conductivity advantages. The multipurpose spacer is mounted and connected in an assembly in high-frequency electronics testing devices. The multipurpose spacer provides a substantial reduction in error signal modulation bandwidth and improved high-frequency performance.

Abstract: Ground reference lead for measuring high frequency electrical signals using a probe head. The ground reference lead comprises a flexible body, a probe socket arranged on a probe end of the flexible body, a ground socket arranged on a ground end of the flexible body, an electrical contact pathway that electrically connects the probe socket and the ground socket and that extends at least partially within the flexible body, and a resistor that is electrically arranged in the electrical contact pathway.

Abstract: A probe head with a cylindrical portion and an oblique truncated portion angled downward toward a high-powered electronic device under testing. The probe head has a proximal end comprising an oblique truncated cone portion angled relative to the longitudinal axis at an input angle and has an analog signal input. The probe head has a digital signal output provided on the distal end of the housing.

Abstract: A temperature-independent optical link for converting a received electrical signal to an analog signal. The temperature-independent optical link comprises a temperature-controlled transmitter chamber housing an ETO transmitter and a feedback-loop temperature control system. The optical link is housed in a probe head having a power supply device, and a probe tip. The temperature-independent optical link is used in a method for converting a received electrical signal to an analog signal.

Abstract: A gravity flow apparatus that scalps off the large pieces of foreign material from grain before processing or storage. The scalper consists of an upright housing with a grain inlet at the top. The grain enters the housing and drops onto a dead head slide. The dead head slide with a flexible baffle slows the momentum of the falling grain then spreads the grain out over the slide width before it enters the screen. The slide is sloped to suit the grain's natural angle of repose and is lined with an anti-friction material for mass flow. The grain enters the full width of the screen while a second baffle stops grain from freely pouring into the foreign material discharge. The screen is adjustable to allow the grain to spread on the screen at its natural angle of repose while trash is scalped off over the screen into the trash discharge.