NerdKits - Ignition Coil Driver (Basic Electronics)
WEBMar 2, 2012 · The software will send opposite pulses to the two 2N7000 mosfets which will drive the two 2n3055 transistors, each powering opposing coils in the transformer to produce an alternating 250-300v current in the secondary coil to charge the capacitor. April 06, 2010 by mongo Check this link for a pretty decent schematic for a CDI ignition setup.
NerdKits - Servo Squirter
WEBDescription. Hobby Servo, Hitec HS-50. 1. This servo is a fairly standard small hobby servo, available from Amazon.com among other places. Water pump, low voltage piston-type. 1. This pump actually has some serious kick, and throws pulses of water easily 8-10 feet in a narrow stream. Small n-channel MOSFET, 2N7000. 2.
Motors and Microcontrollers 101 - NerdKits
WEBGoing from the 2N7000 datasheet, the "Thermal Resistance, Junction-to-Ambient" is more than 300°C/W, implying that for a 1.5 Watt power dissipation, the transistor would have to be roughly 450°C above room temperature. This would clearly just melt the plastic of transistor! It's better to keep temperature rise at most 50°C or less if possible.
NerdKits - Nerdkit/Arduino with EL wire (Basic Electronics)
WEBSep 1, 2011 · Here is a 2N7000 - LED circuit I glombed off one of Noter's excellant drawings, slightly modified. Paul had used a 10k Ω resistor I am not sure if that is necessary but it probable would not hurt just to get everything working. You do not even need to use the mcu to begin just use 5 volt + from your regulator.
NerdKits - Capacitive Touch Sensor: Learn Electronics with a …
WEBThe MCU can't source that much current without inducing noise in our analog measurement, so instead we use a 2N7000 transistor to control when the LEDs are on and off. The output of the PWM pin is connected to the gate, and the LEDs are connected with a current limiting resistor to the transistor. The schematic of this project is shown below.
Microcontroller Programming » Fan control troubleshooting
WEBApr 30, 2012 · I have got this little project where I want to control a fan using an LM34 temp sensor and a computer fan with model number : ASB0912L. I used a 2N7000 mosfet transistor as a switch. I want my fan to run at 35% duty cyle when the temperature is above 77 fahrenheit and to run at 0% duty cycle when temperature is equal to or less then 77 …
NerdKits - Help driving a high voltage Piezo (Basic Electronics)
WEBNov 2, 2011 · As expected, at resonance (here about 531 kHz) the current is about +3dB relative to the driving voltage amplitude (note that 20*log10 (1/0.7) = +3dB). Let's drive it with a 60V square wave @ 531 kHz and look at the current into the piezo element: OK, big currents at 531kHz -- roughly a sine wave of 5 A amplitude!
NerdKits - 4 Transistor H-Bridge Fail (Basic Electronics)
WEBAug 22, 2011 · I've been controlling a 12v source with the circuit below. It uses 2 N MOSFET on low side, and 2 P MOSFET on high side controlled by two smaller N MOSFET (2N7000). All four quadrants of the H-bridge are controllable using just the 5v from micro-controller with this set up. August 27, 2011 by Twarter369 So, jp3 would be the motor then?
NerdKits - Pumpkin tutorial (Support Forum)
WEBOct 10, 2011 · I did the pumpkin tutorial this weekend and I had some issues wiring it, but specifically, what is the resister that is connected to ground that looks like it is coming out of the 2N7000 base for? October 10, 2011 by bretm Are you talking about the capacitive proximity sensor? I don't see a resistor connected to the base in the schematic.
MOSFET Problem on Constant current source (Basic Electronics)
WEBDec 21, 2009 · Is this a 2N7000 for the MOSFET, or the BUZ11 as shown in the schematic? Mike. November 30, 2009 by soundman003 Hello Thank you for a response on this. I am powering the DMX receiver with a AC wall adapter 12v then I am using the driver circuit around the bottom of the page to the left for Luxeon LED's.