However the run of the mill disk’s do work fine (my first five boards were built with bottom of the barrel junk box parts and work as well as several using high quality parts). Do not use a 78LO5 for IC1 in this circuit, only the 7805 works reliably. Too many dents (or too large a dent) will raise the pressure inside the tube to where it will saturate and break down before the operating voltage is reached, or will touch the anode wire. Since our shifter has four flip-flops, there are a total of 16-states, of which there are 8-disallowed states. How many stages would be required to generate a set of three phase waveforms?
For complete device data sheets, follow the links. CD4017 Johnson counter with 10 decoded outputs CD4022 Johnson counter with 8 decoded outputs [*] 74HC4017 Johnson counter, 10 decoded outputs [*] The ANSI symbols for the modulo-10 (divide by 10) and modulo-8 Johnson counters are shown above. Not all disallowed states contain a 010 sequence. For the PC board, install the jumpers first (2 are insulated from IC3 pin 4 to 9 and from IC3 pin 9 to the optional pulse output if used), then the IC sockets (which should be used), resistors, capacitors, and diodes.
The tube is thin and will crush with even a slight pressure. See figure below. If these (P1 P2 P3) are low-pass filtered to sine waves and amplified, this could be the beginnings of a 3-phase power supply. Далее сигнал поступает на три активных фильтра, собранных по идентичной схеме на транзисторах VT1-VT3, которые отличаются только номиналами конденсаторов. Another disadvantage of the ring counter is that it is not “self starting”. If we need the decoded outputs, the ring counter looks attractive, in particular, if most of the logic is in a single shift register package. If not, the conventional binary counter is less complex without the decoder.