Level: Medium — Build a decimal counter that advances from 0 to 9 and resets automatically using a TTL-compatible AND gate.
## Objective and use case
You…
Level: Medium – Build an optical object counter with decimal outputs and an automatic batch reset.
## Objective and use case
In this practical case, you will…
Level: Medium | Construct a transistor-driven relay circuit to automatically control a water pump using a float switch.
## Objective and use case
In this…
Level: Medium – Disconnect a critical load using a normally closed relay contact when a voltage threshold is exceeded.
## Objective and use case
In this…
Level: Medium – Build basic logic gates by wiring the contacts of multiple relays in series and parallel.
## Objective and use case
* **What you will…
Level: Medium – Implement an SPDT relay to automatically alternate between a main power supply and a backup battery.
## Objective and use case
In this…
