Electronics Help Care electronics circuit diagram
Bass circuit diagram for amplifier:
This is a Bass circuit diagram for the amplifier. every amplifier needs a bass tone control circuit. here this circuit can control the bass. this board used 2 adjustable volumes. One is for vol and another is for Bass control. here, there is no need for any voltage. because it’s only the bass controller. It has no pre-amplifier to increase the sound. we can’t control the tone by using this board. if we can use it with a pre-amplifier then the sound will be so good.
This circuit is mono. if we need stereo then we have to use dual board. 100k volume can be. 50k will be good for this without pre-amplifier board. 4k7,1k,2k2 resistors. 104pf. it’s a very simple board.
the PCB for this board is
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Audio equalizer Tone Control Ic 4558:
This is an audio equalizer Tone Control Ic 4558. this circuit diagram can control High mid and low. This circuit needs dual voltage positive negative and ground voltage. we can use 12-0-12 voltage to 15-0-15 voltage. this is a mono-circuit diagram. Every amplifier needs this type of pre-amplifier to produce good sound quality. there are many kinds of pre-amplifiers. Stereo and mono are both types of circuits; this is a mono-circuit diagram. The voltage should be dual positive negative and ground. the main amplifier ground voltage and this pre-amplifier ground voltage must be connected. We can make a voltage of 12-0-12 to 15-0-15 using 7812,7912 and 7815,7915. but this type of voltage produces low amperes. low amperes can’t make good sound. for this, we can use tip41 and tip42 to make strong voltage. here is the diagram to make 12-0-12 voltage.
