Right here is definitely the circuit of a electric guitar preamplifier circuit based TL071 that would accept any common guitar pickup. It's also versatile in that it has two signal outputs. A common illustration of working with a pickup attached to a guitar headstock is shown in above image. The pickup unit contains a transducer on one end and also a jack on the other end. The jack can be plugged right into a guitar preamplifier circuit and then to a power amplifier system. The pickup unit captures mechanical vibrations, generally from stringed instruments for example guitar or violin, and converts them into an electrical signal, which could then be amplified by an audio amplifier unit. It is most often mounted on the body of the music instrument, but may also be attached to the bridge, neck, pickguard or headstock. The primary part of this preamplifier circuit shown in above circuit diagram is a single-transistor common-emitter amplifier with degenerative feedback in the emitter ...

This is the UM66 music generator circuit, of course this circuit uses UM66 as the main component to generate the signal of music / melody. UM66 operates on a supply voltage of 3V. The required 3V supply is given through a zener regulator. The transistor Q1 and Q2 is a push pull amplifier to drive the loudspeaker, so the music signal from pin 1 IC UM66 can be heard loudly. A class A amplifier can be used before push pull amplifier to minimize the noise and improve the output sound quality. UM66 is a 3 pin IC package just looks like a BC547 transistor. Components list: R1 = 4.7K C1 = 10uF-25v D1 = 3.3v Zener Q1 = SK100 Q2 = SL100 IC = UM66 SP = 8 ohm UM66 Pin Configuration: Output : Melody Output +Vdd : Positive power supply -Vss : Negative Power supply UM66T Features: Voltage rating: 1.3V to 3.3 V 62 Note ROM Memory Power on reset

This circuit turns-off an amplifier or any other device when a low level audio signal fed to its input is absent for 15 minutes at least. Pushing P1 the device is switched-on feeding any appliance connected to SK1. Input audio signal is boosted and squared by IC2A & IC2B and monitored by LED D4. When D4 illuminates, albeit for any fairly short peak, IC3 is reset and restarts its counting. Pin 2 of IC3 is still at the low state, the two transistors seem like on too as the relay operates. When, after a 15 minutes delay, no signal appeared at the input, IC3 ends its counting and pin 2 will go high. Q1 & Q2 stop conducting too as the relay switches-off. The device is thus totally off too seem like the appliances connected to SK1. C5 & R9 reset IC3 at power-on. P2 allows switch-off at any moment.

Here the Multitone Alarm sound generator. This kind of multitone alarm is useful for security alarms, reverse horns, and so on. It generates five various sound tones and is also considerably more ear-catching when compared to a single-tone alarm. The circuit is constructed close to well-known CMOS oscillator-cum-divider IC 4060 and small audio amplifier LM386. IC 4060 is utilized as the multitone generator. A 100 µH inductor is utilized at the input of IC 4060. Therefore it oscillates within the range of about 5MHz Radio frequency. IC 4060 itself separates RF signals into AF and ultrasonic ranges. Audio signals of various frequencies can be obtained from pins 1, 2, 3, 13 and 15 of IC 4060 (IC1). These kinds of multifrequency signals are mixed and given to the audio amplifier designed close to IC LM386. The actual output of IC2 is given towards the loudspeaker through capacitor C9. If you need louder sound, work with power amplifier TBA810 or TDA1010. Only five outputs of IC1 are bein...

A simple PLL FM demodulator circuit using IC XR2212 is shown here. XR2212 is a highly stable, monolithic PLL (phase locked loop) IC specifically designed for communication and control system applications. The IC has 0.01 Hz to 300KHz frequency range, 4.5 to 20V operating voltage range, 2mV to 3Vrms dynamic range, high temperature range, TTL / CMOS compatibility and adjustable tracking range. The operating of a PLL FM demodulator is incredibly simple to know. The input FM signal and the output of the VCO is applied to the part detector circuit. The output of the part detector is filtered employing a low pass filter, the amplifier and then used for controlling the VCO. When there's no carrier modulation and the input FM signal is in the center of the pass band (i.e. carrier wave only) the VCO’s tune line voltage are going to be at the middle position. When deviation in carrier frequency happens ( that means modulation occurs) the VCO frequency follows the input signal so as to keep t...

This is the circuit diagram of steam whistle sound generator. This circuit contains six square wave oscillators. Square waves are composed of a huge variety of harmonics. If six square waves with various frequencies are added collectively, the final result is going to be a signal which has a very large number of frequencies. When you listen to the result you will find out that it happens to be very identical to a steam whistle sound. The circuit ought to be beneficial in modelling or even in a sound studio. This circuit works by using only two ICs. The first IC, a 40106, consists of six Schmitt triggers, that are all set up as oscillators. Various frequencies are produced from the utilization of various feedback resistors. The output signals from the Schmitt triggers are mixed via resistors. The resulting signal is amplified by IC2, an LM386. This IC can deliver audio power of about 1 W , which should be enough for driving the loudspeaker for most sound related electronic circuit. In ...