Amplifier Circuit Diagrams

SPEAKER DELAY SCHEMATIC CIRCUIT DIAGRAM

In order to prevent noise in the first working moments of the amplifiers and to prevent damage to the speaker, the control element is the standard in the sound systems πŸ™‚ In fact, it can be called the timing circuit, but so far I have only used the amplifiers in a circuit that I have used in my circuits, as well as a few more delayed timer circuits

Our first circuit is a bit more complicated than other samples I installed on the LM741 Opamp, but I have tested in the PCB files

SPEAKER DELAY SCHEMATIC CIRCUIT DIAGRAM 1

SPEAKER DELAY SCHEMATIC CIRCUIT DIAGRAM 2

Circuit LM741 can set the pickup time relay board 10k TrimpotlarΔ± on the chart, you can use two balls got istersebiz a 12-volt relay Use Rule proper amperage by the power of your amp PCB File Speaker Delay Circuits

How it works

A speaker will be turned off by a relay in this circuit. The relay will then pull in the speaker to the output of the power amplifier after roughly 3 seconds. You will, as is customary, listen to music.

Here’s how to do it step by step.

It has a low voltage across it. Through R2, there is no bias current to Q1’s Base. As a result, Q1 and RY1 are ineffective.

C1 steadily charges current until it is fully charged. Then Q1 receives a bias current, and everything works. Pull two contacts together to drive a relay. Connect the power amplifier to the speaker.

C2 can be used to set the delay time. If a long time is required, extra capacitance is added. However, if the length is reduced, the capacitance of C2 is reduced.

The LM741 series areΒ general-purpose operational amplifiers that feature improved performance over industry standards like the LM709. They are direct, plug-in replacements for the 709C, LM201, MC1439, and 748 in most applications.
LM741 can be usedΒ as a comparator in order to determine the levels of applied input voltagesΒ i.e. either smaller or larger input voltages are applied at its input terminal.
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