Abstract: A syringe gauging, loading and injection apparatus to enable a person with loss of vision and/or loss of fine motor control to fill a conventional barrel and plunger type syringe with a pre-determined dosage and to thereafter self-inject the dosage from the syringe. The apparatus may be adjusted to the desired dosage and verification of the dosage is accomplished through tactile stimulus and/or audible sound. The apparatus, which releasably supports a syringe, includes a stop member which is positioned by rotation of a wheel to allow the syringe to be filled to the desired dosage. Each complete rotation of the wheel results in a signal to the sense of touch and to the sense of hearing. The stop member may be releasably retained in an operative position, i.e., in engagement with the syringe plunger, to prevent inadvertent emptying of the syringe. The stop member may be releasably retained in an inoperative position, i.e.

Abstract: An amplifier circuit to be interposed between an antenna and a utilization unit such as a radio, scanner, citizens band transceiver or the like. The amplifier circuit includes a current divider for dividing incoming signals into first and second parallel paths and a current amplifier including a pair of cascaded transistors to receive and amplify signals in said second path. The signals in the first path are passed to the utilization unit without amplification. A sensing network is provided to bypass the current divider and the amplifier when the utilization unit is transmitting signals.

Abstract: An improved method of operating a digital timer using line currents of different frequencies such as 50 and 60 hertz. The line current is rectified and converted into square wave pulses at the line current frequency. Upon actuation of a start switch to initiate the timing cycle, the logic circuitry is cleared and synchronized at the line current frequency. The square wave pulses are compared to internally generated clock pulses to determine the line current frequency, and then modified along parallel paths to provide pulses at various frequencies including timing pulses at a timing frequency of ten hertz. The timing interval may be manually or automatically externally established and counters are incremented by the timing pulses at the timing frequency of ten hertz. A comparator actuates a signal when the value in the counters equals the desired timing interval. A scale factor is provided to increase the capacity of the counters by decreasing the timing pulse frequency to 1 hertz.