What is the name of the component labeled Q1...

Question 1 / 2066636eed28f7522a1c51d80a

Question 1 of 2066636eed28f7522a1c51d80a

What is the name of the component labeled Q1 as shown in section "D" of the regulated DC power supply illustrated? Illustration EL-0085

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Question 1 of 20

66636eed28f7522a1c51d80a

What is the name of the component labeled Q1 as shown in section "D" of the regulated DC power supply illustrated? Illustration EL-0085

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🔍 Key Concepts

• Identify how Q1 is drawn: note the symbol style for transistors versus SCRs and triacs • Think about the role of section D in a regulated DC power supply: is Q1 used as a series pass element, a switching device, or an AC control element? • Compare the current direction through Q1 and the neighboring diode CR1 with how an NPN or PNP transistor is normally biased in a series regulator circuit

💭 Think About

• Does section D appear to be controlling AC or already-rectified DC, and which of the listed devices is typically used for each? • Look closely at the small internal arrow in Q1’s symbol: which device types in the choices actually have an arrow drawn that way, and which do not? • In a simple series regulator, is the control device usually placed on the high side or low side of the load, and how is that consistent with the polarity of the device symbol shown for Q1?

✅ Before You Answer

• Verify whether Q1’s symbol has three leads arranged like a transistor (emitter, base, collector) or the four/four-terminal arrangement of a triac or the two-main-terminal-plus-gate of an SCR • Confirm whether a zener diode (CR1) is feeding a control terminal on Q1 in a way that matches a common emitter/base bias configuration • Make sure section B and C already perform rectification and filtering so that section D is dealing with DC regulation, not AC phase control (which would rule out some options)

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Question 1 of 20

What is the name of the component labeled Q1 as shown in section "D" of the regulated DC power supply illustrated? Illustration EL-0085

triac

NPN bipolar junction transistor

PNP bipolar junction transistor

silicon controlled rectifier

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Question 1 / 2066636eed28f7522a1c51d80a

Question 1 of 2066636eed28f7522a1c51d80a

What is the name of the component labeled Q1 as shown in section "D" of the regulated DC power supply illustrated? Illustration EL-0085

Back

Question 1 of 20

66636eed28f7522a1c51d80a

What is the name of the component labeled Q1 as shown in section "D" of the regulated DC power supply illustrated? Illustration EL-0085

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

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