Computer Microphone by BC547
#BC547
#microphone
#audio amplifier
#transistor
#sound recording
#signal processing
#low voltage
#DIY electronics
#preamp
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A Transistor Based Single Zone Alarm circuit
The circuit includes automatic exit and entry delays, a timed bell cut-off, and a system reset feature. It accommodates both normally-open and normally-closed switches, making it compatible with standard input devices such as pressure mats, magnetic reed contacts, foil tape,...
Simple High Quality Preamp For Hi-Fi
The new version has PCBs available and is recommended for optimal sound quality. For those needing tone controls, Project 97 is an excellent choice, offering superior sound quality and tone control features. While preamps have been widely discussed, they are...
audio Microphones disturbed by capacitance
Several KE 4-211-2 Sennheiser microphones were utilized to create a device for acoustic signal analysis. These microphones are connected to a National Instruments data acquisition device via approximately 1 meter long cables, with a sampling rate set at 50 kHz....
Wilf Rigter`s SIMD1 V2
In the never-ending quest for simplicity, even one extra diode is a price I loathe to pay. To avoid using extra components, it struck me that the two diodes in SIMD1 V1 were connected like the two junctions in one...
Simple Op Amp Audio Amplifier
A CA3140 operational amplifier drives a complementary output stage consisting of transistors Q1, Q2, and Q3. The output power is influenced by the supply voltage and the thermal dissipation limits of transistors Q2 and Q3. Under optimal conditions, the output...
50MW Audio Amplifier circuit
This weblog focuses on electronic circuit schematics, PCB design, DIY kits, and electronic project diagrams. The following describes a small audio amplifier, similar to those found in medium-sized transistor radios. The input stage is biased to ensure equal power distribution...
Fender rhodes peterson vibrato preamp
There is significant hiss produced by the circuit. Reducing the treble knob alleviates this issue, although it diminishes treble response. The hiss becomes more pronounced when the vibrato circuit is activated. After these observations, the board was re-capped according to...
Mosfet Amplifier 20Watt Output Power Schematic Diagram
The audio amplifier illustrated in this circuit diagram is a straightforward and efficient audio amplifier circuit based on the TDA1308 integrated class-AB stereo headphone amplifier. This device is manufactured using a 1 mm Complementary Metal Oxide Semiconductor (CMOS) process and...
As of control rechargeable delay circuit
This is a control rechargeable delay circuit. Under normal circumstances, when there is no input signal, the transistor VTi is off. VTz is conducting, resulting in a low output potential (U). When a signal is applied, VTi turns on, VTz...