Build Your Precise 9-Minute Jogging Timer Circuit Diagram

3V Battery operated

Emits a tone following a predetermined duration, such as one, two, or three minutes, for exercise applications.

Circuit Diagram

Components:

Device Objective:

This circuit was developed in response to repeated requests from website visitors for a timing device that would produce a sound signal after a specific period – for instance, one, two, or three minutes – intended for use during physical activity.

As depicted in the Circuit Diagram, SW1 is a 9-way, single-pole rotary switch. When configured in position 1, the Piezo sounder generates three brief pulses each minute. In position 2, the same outcome occurs after two minutes, and so on, extending to a maximum interval of nine minutes when positioned in position 9.

Supplemental Information:

Integrated Circuit Descriptions:

IC1 (4093): This is a quad 2-input Schmitt NAND gate IC. It is commonly used in digital circuits for creating latching or switching functionality. It features four independent NAND gates, each with two inputs and one output. This IC is widely used in timer circuits, level-shift circuits, and various other digital logic applications. Its Schmitt trigger input provides noise immunity and stable switching behavior. The 4093 IC's advantages include its high input impedance, low power consumption, and relatively small size.

IC2 (4060): The 4060 is a 14-stage ripple counter and oscillator IC. It’s a versatile component often employed in timing circuits and frequency generation. It utilizes a cascading series of flip-flops to count clock pulses, producing an output frequency that varies with the count. This IC is commonly used in digital clocks, frequency dividers, and other applications requiring precise timing or frequency control. The 4060’s key characteristics are its stability, accuracy, and ease of use in timing applications. It typically operates at frequencies from a few Hz to several MHz, depending on the design and component values used.

IC3 (4017): The 4017 is a decade counter with 10 decoded outputs IC. It's a widely utilized counter IC, particularly for decimal-based counting applications. This IC contains ten cascaded flip-flops, generating an output signal that changes state every tenth clock pulse. The 4017 is frequently found in digital displays, frequency dividers, and other applications where a sequential counting action is needed. The 4017’s advantages include its high reliability, low cost, and simple programming scheme. It is a popular choice for both beginners and experienced electronics enthusiasts.