ZAMAN BOELUEMUE MUELTIPLEKS TELEFONSANTRALLARI ICIN FONIK ENTERUEPTOER

摘要

P switch sound comprising the transistors t1 and t2 which connect the user u to the driver of the sound hw and which are controlled by pulses applied to their bases. In order to minimize the stray currents ia, to the base of the transistors t1 and t 2 is also connected to the drain of a field effect transistor t4, to the gate of which are applied the said pulses by means of a differentiator circuit c1, r1, and to the source of which are connected to the power supply system, by means of a first bias resistor r2, and a capacitor c2, the second plate is connected to the driver of the sound hw, maintained at a reference potential by means of a second resistor r3. / p