Two Transistors Audio Amplifier
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Audio peak Indicator
This circuit can be used to remotely monitor a loudspeaker, alarm, or audio source for presence of an audio waveform. It can also be directly connected across loudspeaker terminals used as a peak indicator. If you need to monitor some...
Blinker circuit 2
The circuit depicted in Figure 13-4 utilizes triode control. Two transistors, VTi and VTz, are coupled via a capacitor (C) to alternately turn on and off, producing a flashing light effect. The flash frequency is influenced by the capacitance of...
Self Oscillating Amplifier for Distortion Testing
The circuit is based on a simple inductor-capacitor filter circuit, and needs only a pot and a small light bulb to set and stabilise the oscillation. The frequency is fixed, and with a good inductor should be capable of very...
Audio booster
The amplifier's gain is nominally 20 dB. Its frequency response is determined primarily by the values of a few components, mainly C1 and R1. The schematic diagram values provide a response of ±3.0 dB from approximately 120 Hz to over...
Transistor Turns Op Amp On Or Off
When transistor Q1 is switched off, the circuit operates as a voltage follower. By applying a positive voltage to the emitter of Q1 through a 10 kΩ resistor, the transistor is activated and enters saturation. Consequently, the lower end of...
fADC Amplifier Circuit Simulations
A bandwidth-limited amplifier shapes the waveform sampled by the 40 MHz high-speed pipeline Analog to Digital Converter (fast ADC, or fADC). It is well known that the shaping time is twice the time constant (peaking time) for each pole of...
Audio-generator
This circuit generates a sinusoidal output of approximately 8 V peak-to-peak, which can be adjusted down to zero, operating at a frequency of about 500 Hz. The signal is produced by a phase-shift oscillator.
The described circuit utilizes a phase-shift oscillator,...
TPA3112D1 25-W FILTER-FREE MONO CLASS-D AUDIO POWER AMPLIFIER With SPEAKER GUARDß„
The TPS3803 and TPS3805 families of supervisory circuits offer circuit initialization and timing supervision, mainly for digital signal processors (DSPs) and processor-based systems. The TPS3803G15 device features a fixed-sense threshold voltage (VIT) determined by an internal voltage divider, while the...
stk415 090e 2x50 watt stereo
This electronic project stereo amplifier is based on the STK415-090-E class H audio power amplifier hybrid integrated circuit (IC), which includes a built-in power supply switching circuit. The STK415-090-E class H audio power amplifier achieves high efficiency in audio power...