Practical_Electronics-May_2019
ADSR circuit description The ADSR circuit shown in Fig.63 is perhaps the most complex in this synth. (You can get simpler ADSR c ...
for the gate pulse at which the com- parator switches state. When the gate pulse voltage exceeds 2V, the compara- tor U702.1 out ...
the pulse width even further. This en- sures Q2 is only switched on for the briefest of time and effectively con- nects the outp ...
available, but we can now set up the VCA as we have the LFOs available. VCA Calibration In Part 3, we constructed the VCA (Fig.5 ...
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Your project is fi nished and ready to go, but the job isn’t done until you’ve found an appropriate source of power. This could ...
Practical Electronics | May | 2019 45 full-wave rectifier rather than a half-wave rectifier). With a 24V RMS secondary, this cir ...
The minimum input voltage for the 7805 regulator is specifi ed as 7.5V (see Table 3.1 on page 45 of EPE, February 2019). Thus, f ...
seconds, then leave the capacitor to recover for 60 seconds. Connect a high-resistance voltmeter to the capacitor terminals and ...
Another contributor to internal temperature rise is ambient temperature. The life expectancy of a capacitor is reduced signifi c ...
where BFR is the basic failure rate (% per 1,000 hours), VW is the actual working (operating) voltage (in volts), and VMR is the ...
Failure can be catastrophic, so electrolytic capacitors should always be selected and used with care. The following precautions ...
AUDIO OUT L R AUDIO OUT By Jake Rothman T he circuit presented here is a very small Baxandall tone control module designed by Mi ...
Fig.20. The board can be mounted with right-angle pots. be powered off another supply, such as from a power amplifi er. R9 would ...
Fig.21. If you use standard vertical-mount pots then some capacitors may need to be bent over a bit. (Note the PCB files have no ...
Circuit Surgery 54 Practical Electronics | May | 2019 Regular clinic by Ian Bell Comparator circuit design R ecently, there have ...
the input voltage is ≤2V or ≥3V requires two comparators, one inverting (with a 2V reference) and the other non-inverting (with ...
56 Practical Electronics | May | 2019 open-collector output transistor). The simulation also shows the LM741 op amp responds muc ...
is not centred exactly on the 1.6V reference. If the comparator is run from a single supply the output (ideally) switches be- tw ...
Small, cheap and powerful – Part 1 T his month, we go back to basics, looking at Microchip’s smallest and most feature-lim- ited ...
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