Here is one basic circuit of a simple but accurate 1Hz timebase generator built around a standard Quartz clock circuit board. Just lift the clock PCB from any cheap quartz clock and carefully remove ...

While computer chips keep shrinking, the size of gadgets is still limited, in part, by relatively large pieces of quartz that act as pacemakers for electronic circuits. But within the next few months, ...

Here is an ultra simple automatic light switch circuit for bedrooms. After construction, connect the input terminals of this circuit in parallel to the internal buzzer terminals of a Quartz-Alarm ...