. The Bell System technical journal . Fig. 7(b) — Scanner plate of the line unit shown in Fig. 7 (a). REMOTE CONTROLLED LINE CONCENTRATOR 261 cuit connection between printed wiring plates is through pins which ap-pear in the recess and to which the smaller plate is soldered. 6. BASIC CIRCUITS a. Diode Gates All high speed signaling is on a pulse basis. Each pulse is positive andapproximately 15 volts in amplitude. There is one basic type of diodegate circuit used in this equipment. By using the two resistors, one con-denser and one silicon alloy junction diode in the gate configurationshown in
. The Bell System technical journal . Fig. 7(b) — Scanner plate of the line unit shown in Fig. 7 (a). REMOTE CONTROLLED LINE CONCENTRATOR 261 cuit connection between printed wiring plates is through pins which ap-pear in the recess and to which the smaller plate is soldered. 6. BASIC CIRCUITS a. Diode Gates All high speed signaling is on a pulse basis. Each pulse is positive andapproximately 15 volts in amplitude. There is one basic type of diodegate circuit used in this equipment. By using the two resistors, one con-denser and one silicon alloy junction diode in the gate configurationshown in Fig. 8, the equivalents of opened or closed contacts in relaycircuits are obtained. These configurations are known respectively asenabling and inhibiting gates and are shown with their relay equivalentsill Figs. 8(a) and 8(b). In the enabling gate the diode is normally back biased by more thanthe pulse voltage. Therefore pulses are not transmitted. To enable or INPUT ENABLING GATE CIRCUITCI OUTPUT. (a) ENABLING GATE SYMBOL INPUT OUTPUT CONTROL EQUIVALENT RELAY CIRCUITOUTPUTINPUT f CONTROL CHli^ INPUT INHIBITING GATE CIRCUITCl OUTPUT INHIBITING GATE SYMBOL INPUT
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
