The present discharge lamp system comprises two or more serially connected discharge lamps connected across a pair of power input supply terminals through a ballast circuit and two or more serially connected semiconductor starter circuits. The starters are connected in parallel with their respective discharge lamps and have inherent breakdown voltages, whereby the total value of the breakdown voltages for each starter is higher than the source voltage at the power supply terminals. The system fu...

A discharge lamp lighting device combines one or more discharge lamps and a backswing booster including essentially a power source circuit having a power source connected in series with a ballast and a high voltage generating circuit having an oscillation capacitor and a series circuit of a nonlinear inductor and a switching semiconductor. The supply voltage for the discharge lamp from the power source circuit is established to the extent permissible by the lower limit for sustaining an arc disc...

A discharge lamp lighting apparatus includes three oscillation circuits. The first comprises a linear inductor and a capacitor connected in series to a power source. The second oscillation circuit is connected across the capacitor and includes a bounce or backswing booster inductor and a voltage responsive switching element connected in series. The third oscillation circuit comprises the bounce inductor and its distributed capacity. The bounce booster inductor has a magnetic core with a shape an...

A space diversity receiving system for the central station of a multi-direction time division multiplex communication network having a plurality of satellite stations, and one central station. Each satellite station transmits signals to the central station during an assigned time slot. The central station receives burst signals from the satellite stations. A first receiver has a main antenna. A second receiver has a supplementary antenna. Both receivers include a demodulator coupled to the corre...

A memory device provided with initializing function for forcibly setting contents of all the memory cells at the same predetermined logic state is disclosed. The memory device comprises a plurality of word lines, a plurality of digit lines, a plurality of memory cells arranged at the intersections of the word lines and the digit lines, and a word decoder having a plurality of output terminals coupled to the word lines, wherein the word decoder is forcibly set to take at its output terminals a se...

A connector including at least two connector blocks, first connector block and second connector block, which may be employed to interconnect fiber optic cables or electrical cables. A pair of frame-like lugs on a housing of the first connector block are engageable with a pair of flexible arms on a housing of the second connector block to couple the two connector blocks to each other. A housing of one of the connector blocks is provided with members which are resiliently deformable when engaged w...

A porous sintered body for an aluminum-titanium alloy electrolytic capacitor has a wire of nitrogenized titanium, or the like, implanted therein. A method of producing such a porous body subjects a titanium wire to a nitriding treatment, and embeds the nitrogenized Ti wire into a press-molded body of the mixture of aluminum and either titanium or titanium hydride powders. Then, the press-molded body is sintered. An excellent LC characteristic is obtained even under the sintering condition, and t...

The present invention features a battery saver circuit which both conserves battery energy and allows for the prolonging of the energization of high power drain circuits in the event that during any periodic brief battery saving energization a valid incoming signal (a preamble or subsequent message code) is received, whereby the inclusion of a specific address code may be ascertained and the subscriber alerted.

A bidirectional constant current driving circuit is connected between the positive and negative terminals of a power supply. This drive circuit has an input terminal and an output terminal with a load coupled to the output terminal, and with the current supplied thereto being controlled to vary in either a positive or a negative electrical direction. The inventive driving circuit has four transistors . A first and second of these transistors have a first electrode connected to the first power su...

An approximation control code is initially set to logic "1" except for the MSB which is set to logic "0". At the m-th comparison, if a sampled analog signal is greater than a comparison reference signal proportional to the control code, the m-th and (m+1)th MSBs of the control code are replaced by logics "1" and "0" respectively, and, if the sampled analog signal is less than the comparison reference signal, the (m+1)th MSB is replaced with logic "0".