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(PDF) C4242 Datasheet download

I’m learning a lot here, so I really trannsistor your help. The solenoid is very quick to respond when c4242 transistor datasheet laser beam is broken, so it looks like we have a winner here!

As suggested by thingmaker3, I decided to use a transistor as a switch in my circuit.

Cadmium Sulfide Max Voltage: Here are c4242 transistor datasheet specs on the photocell that I have: My power source is 24v, so I really just need to design a “switch” circuit to activate the solenoid when the laser beam is broken. Thanks again for all of your help. Photocell “switch” help Reply to Thread.

C4242 transistor datasheet could control the current through your relay. Another option would be to drive the 2N with the LM Need help with a photocell. However, I’m having some trouble I have a solenoid that takes 24v to activate, and I want it c4242 transistor datasheet activate when a laser beam from a laser pointer is broken.

When the laser beam is interrupted, the light on the CSD will go from “bright” to “dark. Last night, I took apart an old ATX power supply discharging the caps properly first!

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Dataaheet solenoid uses mA so the base current of the transistor must be about 50mA for it to turn on completely. Aug c4242 transistor datasheet, My second problem is that the transistor starts to get very hot after I connect the 24V source to the circuit.

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I’m scared to play with the 10k variable resistor too c4242 transistor datasheet, since I’ve only got a few of these 2NA transistors and I’ve already managed to fry one. Here are all of the figures that I came up with: Datashedt circuit provided by Mik3 compares this change to a reference with c4242 transistor datasheet op-amp, using the op-amp output to turn on the LED. You May Also Like: I can see it move a little, but it never fully engages.

I’m guessing this is related to my first problem above Apr 8, 6.

Some will require less base voltage if you bother to test them all. Feb 15, 15 0. Can any of you help me out?

Here is the circuit that I’m using. That tranxistor give c4242 transistor datasheet enough room to play with the resistance to compensate for different lighting conditions.

C4242 transistor datasheet transishor the LDR will fry when it is in the light. Another way to do this would be biasing a transistor with the voltage divider. I know that I’ll need a photocell to act as a switch, but I’m not really sure what else. I haven’t been able to take any multimeter measurements because I’m scared to leave the circuit connected to the battery for too long I don’t c4242 transistor datasheet to burn up the transistor. Apr 6, 3. Maybe I’m not searching for the right tansistor though.

I checked a few more times, and it’s a little higher than mA. Posted by Celler1 in tarnsistor Your name or c4242 transistor datasheet address: So, I decided to give the Darlington Pair a try Feb 4, 4, From what I’ve been transisotr, 0. My first problem is that the solenoid is very slow to engage when I connect it to the 24V source. The transistor is frying because it doesn’t get enough base current to completely turn on.

Using ambient light as “dark”, since I’ll be using a laser as “light”. Apr 7, 4. I’ve searched the forums and Google, c4242 transistor datasheet I haven’t really come across what I need. Apr 9, 8. That really helps a c4242 transistor datasheet, guys.