Results tagged #Loudspeaker in Circuits
Loudspeaker to Microphone converter circuit
This circuit takes an ordinary loudspeaker and allows it to be used in reverse, as a microphone. This circuits allows you to use a cheap lou...
Loudspeaker Impedance Meter
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Loudspeaker Protector Monitors Current
This circuit uses a 0. 1O 1W resistor connected in series with the output of a power amplifier. When the amplifier is delivering 100W into a...
Loudspeaker Protector Monitors Current Circuit
When the voltage on the non-inverting input of each comparator exceeds the voltage at its inverting input, the output switches high and illu...
Loudspeaker Protector Circuit
Transistors Ql, Q2, and Q3 monitor the two outputs of the stereo amplifier. If the offsets exceed 2 V, Q7 is turned off, which turns off Q8...
Novel loudspeaker coupling circuit
The ground side of the speaker is connected to the junction of two equal high value capacitors (1000 µf is typical) across the supply. Th...
Two way Loudspeaker cross-over
The resistance of loudspeakers is characterized in a frequency depending on the destination and their press. Loudspeakers are distinguished...
Loudspeaker Box Amplifier schematic
This original design is a variation on a well-known design, examples of which can be found in a great many texts. My variation was to add a ...
Loudspeaker Tester
Testing loudspeakers is covered in some detail in the passive crossover article (see Design of Passive Crossovers), but it is irksome at bes...
Loudspeaker Protection circuit
The protection circuit output amplifiers and speakers, has some interesting features such as isolating the speaker from the amplifier output...
Loudspeaker as a Microphone
This circuits allows you to use a cheap loudspeaker as a microphone. Sound waves reaching the speaker cone cause fluctuations in the voice ...
Loudspeaker Protection
The detector circuit shown in Figure 1 (1) is simple and works well, and as shown will not trigger with a 30V RMS signal at 5Hz, but operate...