Minute repeater (minute part) using relays.
The C-contact switch at the bottom centre sets the minute, usually 0-59 (BCD).
The switches on the left have the following functions from the top.
1. manual clock input (push switch)
2. automatic/manual clock setting (C-contact switch)
3. start of operation (push switch)
The C-contact switch contact switch with lamp between these three switches and the time setting switch is used to switch the minute repeater system. The following two modes are available.
1. '15-minute increments to 1-minute increments'
2. '10-minute increments to 1-minute increments'
When completed as a minute repeater, a special counter for ringing must be inserted before the clock input to this circuit.
The lower right lamp turns on when the value in the register is less than 15 or 10.
This signal can be used to change the ringing of the bell.
I have already completed the whole minute repeater circuit, but unfortunately the simulator space is too small to draw everything in.
