Like our previous post on low and medium impedance preamplifier circuits, this tutorial shows a simple JFET preamp circuit that gives very high input impedance. The circuit works good with weak signal sources like microphone, guitar pickup or sensor and also it uses a N-channel JFET 2N5457. This Simple High Impedance JFET Preamp Circuit is […]
Mini Projects
Simple Footstep Electricity Generator Circuit using Piezo Transducer
To begin with, we use piezoelectric transducers in a footstep power circuit because they convert foot pressure into small electrical power. Furthermore, piezoelectric effect means crystal which makes electricity when press or stress happen and if we press special crystal a small current comes out. Hence, Simple Footstep Electricity Generator Circuit uses parts like piezo […]
Simple Crowbar Circuit
Simple Crowbar Circuit is safety part in electronics, as it protect from high voltage spike or surge; it work like fuse but does not burns and it gets short circuit fast to stop damage. Furthermore, it use SCR or TRIAC for shorting, transistor or Zener to trigger; also trigger watch voltage all time and if […]
Simple Solenoid Driver Circuit
A Simple Solenoid Driver Circuit is a setup to control solenoid using low voltage signal; solenoids are like magnets and they change electric power into movement. Furthermore, they need more voltage than small digital parts like microcontrollers can give, also the driver works like a switch and it lets small signal turn big current ON […]
Simple White Noise Generator Circuit
The Simple White Noise Generator Circuit is a DIY project that produces sound like radio hiss or static; so we use this circuit for sound effects, privacy noise, and testing audio equipment.” Noise come from electronic parts, so we can use resistor or reverse transistor for noise, also capacitor remove too high or too low […]
Simple Missing Pulse Detector Circuit
Simple Missing Pulse Detector Circuit is an electric circuit; it finds when pulse is missing in pulse signal. Most time it uses 555 timer IC and work like monostable multivibrator; when it gets trigger it gives one output pulse and if next pulse does not come in time then timer is in no reset. Hence, […]