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Horizontal Crimson Ecto Goggles
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $0.05 |
Digi-Key | $1.25–$2.49 |
LCSC | $3.33 |
Mouser | $1.99 |
Verical | $0.03–$0.08 |
Controls
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- Net 1: Connects Q1 Q1:(B) to R1 R1:(P2).
- Net 2: Connects SW1 SW1:(P2) to R1 R1:(P1).
- Net 3: Connects SW1 SW1:(P1) to LED1 LED1:(K) and V1 V1:(CATHODE).
- Net 4: Connects LED1 LED1:(A) to Q1 Q1:(C).
- GND: Connects Q1 Q1:(E) to V1 V1:(ANODE).
Component Properties and Potential Issues-
Power Supply V1 V1 (5V)
- It provides a 5V source with the ANODE connected to the ground (GND) and the CATHODE connected to the SW1 and LED1 cathode.
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LED LED1 LED1 (Forward Voltage: 2V, Current: 20mA)
- Operating at 2V, it is connected to the transistor Q1 and the switch SW1.
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Resistor R1 R1 (500Ω)
- A 500Ω resistor seems suitable for the current-limiting role but let's calculate the resulting current and voltage drop quickly:
$ I = \frac{V - V_f}{R} = \frac{5V - 2V}{500 \Omega} = \frac{3V}{500 \Omega} = 6mA $
- The LED current of 6mA is below the typical operating current (20mA), so the LED might not be bright enough.
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Switch SW1 SW1 (Push Button)
- Properly connected: SW1 SW1:(P2) to R1 R1:(P1) and SW1 SW1:(P1) to LED1 LED1:(K).
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Transistor Q1 Q1 (Bipolar Junction Transistor, Beta: 100)
- Base current is essential for proper switching:
$ I_B = \frac{I_C}{\beta} = \frac{20mA}{100} = 0.2mA $
- Resistor R1 needs to handle this base current.
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