.. you put a faster oscillator in the pic. It works on my test device, but running the pic at over ~8MHz with only a 3.3 volt supply can be problematic. So I hear. I’m still working on the WAV stuff, so if you have some funny results ...
.. my impact on the planet. Also, because this controller is so simple, it only needs one power suply, so, it only needs 1 12 Volt (for both the logic and the motors), instead of 1 5 Volt (for the logic) and 1 12 Volt (for the motors). This ...
.. If you apply a specific voltage to a resistor, you can compute the resulting current with: I = R/V Example: I = 100 Ohm / 5 Volt = 20 mA Obviously that does not work with LEDs because they don't behave like a linear resistor. If you look at ...
.. FET, which can turn on a beeper or activate a relay. If a low power voltage comparator is used, such as the LMC7211 , a 9 volt battery will power the circuit for many years. The more popular LM358 would also work but would draw more ...
.. the iPod. Apple's claimed battery life on this iPod is 10 hours. That's two hours less than the previous Shuffles. The 3.7 volt lithium-polymer battery lists a capacity of 0.27 watt-hours. To calculate the capacity in amp-hours, we know ...
.. 1 meg. in series with 470k) R6 39 k R7 33 k R8 100 ohm C1 0.047 uF (not critical) C2 30 pF (or more) trimmer C3 100 uF, 10 volt or more Q1 2N4403 (substitution risky) Q2 MPS-A18 (substitution probably won't work) Q3 MPS-A56 (sub may work - ...
.. This circuit will power a 6 inch 4 Watt fluorescent tube off a 12 Volt supply, consuming 300 mA. It may also be powered by a suitably rated universal AC/DC adapter. Advantages of the ...
.. close values are OK although the values shown are quite common. The 1 uF capacitor may be just about any type, with a 16 volt aluminum electrolytic being the most likely choice. The capacitor will see about 1/2 volt reverse bias at times ...
.. to the other transistor base and reverse the meter leads. If the voltage on the 2.2k resistors isn't low, maybe under a volt, try cleaning everything with a solvent and thoroughly drying it. Once the reading is low and steady, hold a ...
.. on the dynamic conductance of optoisolators' junctions, simple optoisolator bridges compute the watts and volt-amperes of an ac load. W Stephen Woodward, Chapel Hill A decade or so ago, I designed a simple circuit that ...