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Using a bipolar transistor to turn a load on and offFor situations when your microcontroller (or whatever) can't do it on its own.- (*steve*)
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PCB prototype manufacturing calculatorFind the least expensive PCP manufacturer for your hobby project- Harald Kapp
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How to take photos of circuit boardsHints and tips on how to take optimal photos of your circuit boards- KrisBlueNZ
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Most resources
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20Harald Kapp
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17bertus
Resources
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Long duration timers - Notes for beginners
Tips for beginners on long duration timers.- (*steve*)
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Got a question about driving LEDs?
A list of common anwers and links to useful documentation on driving LEDs.- (*steve*)
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How to take photos of circuit boards
Hints and tips on how to take optimal photos of your circuit boards- KrisBlueNZ
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For situations when your microcontroller (or whatever) can't do it on its own.
PWM, arbitrary waveforms, surge pulses, fast transients, noise
Simulate time variable resistors in LTSPICE using a voltage source as controller
simulate sawtooth and triangular waveforms in LTSPICE using a PULSE source
Ideal components lead to unexpected simulation results
Finding a component that suits your needs at the right price
The reason you would saturate a BJT, and how to calculate base current and resistor values
An explanation of the E-series and why those funny values are used.
What is a power supply (source) and how can I control the voltage and current?
Find the least expensive PCP manufacturer for your hobby project
