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Observing my Boss pedals and how they were switched on and off I figured there must be more to it. It took me only about 4 hours to design and test this circuit. It works very well and I’m...
This light dimmer control features active timing capacitor reset or AC line zero-crossing synchronization. The 13 additional components are common and cost less than $2. Performance at the low end is exceptionally smooth and snap-free, even better than the...
This smoke detector electronic project is designed using the LM1801 and common electronic components. The smoke detector circuit diagram does not utilize ionization detection, gas sensors, or optocouplers; instead, it employs two photoresistors (LDRs) and an LED. The circuit...
A reflex isolator detects the presence of an object by reflecting light from the object back to the sensor. This technique is effective when an object is in close proximity to the sensor. Reflex isolators, also known as proximity sensors,...
Motorola MWA 110, 120, or 130 are wideband amplifier ICs. This wideband preamp circuit can be used in many applications. Keep the leads short when constructing the circuitry. PC board layout (shading represents copper) and parts layout. X is...
The process involves adapting an old phone for Bluetooth functionality, specifically testing the ringer circuit constructed using schematics from Sparkfun. When connecting a section of the schematic to a 3.5V source (Vcc), an output voltage of 45V is observed,...
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