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Build a Simple Timer Circuit Using the Optional Breadboard Kit for the Vernier Circuit Board 2

Optional Breadboard Kit for Vernier Circuit Board 2

Install the Optional Breadboard Kit on the Vernier Circuit Board 2 (VCB2) and extend your range of electronics labs. The kit includes two transistors (one PNP and one NPN), a 555 timer, a three-color LED, green and blue LEDs, a photocell, and some 220 Ω resistors. Additional wires for connecting points on the breadboard to each other and wires for connecting points on the breadboard to the VCB 2 terminals are included.

The diagram shows a simple circuit that blinks two LEDs alternately. You can easily build this circuit using the components on the Vernier Circuit Board 2 and the parts included in the Optional Breadboard Kit. The numbers next to points in the circuit correspond to terminals on the VCB2. Components with labels R8, C1, and R10 refer to components on the VCB2. Use 4 AA batteries or a LabQuest Power Supply to provide power to the circuit.

Circuit diagram for two alternately blinking LEDs
Circuit diagram for two alternately blinking LEDs

You can also use the Optional Breadboard Kit to add your own components. For example, you can provide a wider variety of capacitors or resistors for additional RC circuit options or hand a set of diodes to students to construct a bridge rectifier.

Assembled circuit
Assembled circuit

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