All Entries Tagged With: "pre-amplifier"
Circuit Stereo Preamplifier With IC TDA1524A – Tone Control Unit – Bass Treble volume control, channel balance and loudness contour
Stereo preamplifier circuit based on the Integrated Circuit TDA1524A. Contains components for amplification and pre Tone controlling. The signal processing is done by the voltage controlled TDA1524A. This manufactured by Philips IC (NXP) Semiconductors, allows for tone control voltage and can be used in more complex designs using microcontrollers. Here we use linear potentiometers to control [...]
Circuit Adjustable Symmetrical Power Supply Using negative and positive Regulator IC’s LM317 and LM337 / +- 1.2 at 30 Volts
The circuit will serve as a voltage converter with an input voltage of 35 V to produce an output voltage of 1.25 V to 30 V. The positive voltage is being handled by LM317 IC while the negative voltage is handled by LM337. The circuit can provide an output current of 1 A. During the [...]
Circuit audio preamplifier with a BC549 transistor – including PCBs and volume control
This simple circuit can be used to boost the signal sources that are not able to excite your amplifier, or from entering your PC, such as microphones for low and medium impedance, sound-heads, guitar pickups, guitar, etc.. The circuit is very simple and compact and can even be installed inside the signal source, should be [...]
Operational Amplifier Video Tutorial and super microphone circuit with LM324
Afroman goes over the basics of how to use an operational amplifier to amplify tiny voltages, and builds a circuit to listen to very faint sounds with a microphone. For more information about amplifiers, Google “inverting amplifier” “non-inverting amplifier” “instrumentation amplifier” “class A amplifier” “class B amplifier” “class AB amplifier” and that should give you [...]
Download Application Note 31 Op Amp Circuit Collection – National semiconductors
This Application Note (Application Note 31). He has a huge amount of practical circuits using operational amplifiers. They are 33 pages of practical circuits that can be very useful for all who work with operational amplifiers. Complete circuit list Op Amp Circuit Collection free Section 1—Basic Circuits Inverting Amplifier Non-Inverting Amplifier Difference Amplifier Inverting Summing [...]
Download Handbook of operational amplifier applications by Texas Instruments
The purpose of this handbook is to provide a single source of information covering the proper design of circuits employing the versatile modem operational amplifier. This manual will be helpful to the experienced user of operational amplifiers, as well as the new user, in extending the range of potential applications in which these devices can [...]
Download Analog Devices – ADI Diff Amp Calculator portable
ADI’s new ADI Diff Amp Calculator™ is an updated, downloadable version of ADI’s popular ADIsimDiffAmp online design tool. The free, downloadable version of the tool reduces differential amplifier design calculations from hours to minutes. The new tool performs all the required differential amplifier calculations, which reduces design risks and further speeds time-to-market. In addition, designers [...]
Circuit of graphic equalizer la3607
Circuit of graphic equalizer of 7 bands using it integrated la3607 of Sanyo. The circuit integrated la3607 allows to just set up a graphic equalizer of 7 bands for a channel adding some capacitors and variable resistors to the circuit. The cut frequency can be adjusted using variable resistors. It possesses high stability for loads [...]
Circuit audio power amplifier btl tda7052
Circuit audio power amplifier with tda7052 BTL of 1 watt small size The tda 7052 is an amplifier in package plastic dil of 8 pins. Drawn for equipments of portable radios supplies by batteries. TDA7052 doesn’t request external components, it presents good stability, low consumption, without of heat-sink. For not being necessary external components that [...]
Circuit amplifier for head phone op-50
Amplifier Schematic for headphone using op-50 For Pre amplifying of signal of low potency, the earnings of the amplifier can be increased reducing the value of R1 in agreement with the formula: R1=20K©/Av-1 For a version stereo they are necessary two same amplifiers Performance of the circuit: (Vout = 6Vrms, R1=4k©) T.H.D @ 100HZ = [...]
