I recommend you to make a Simple speaker delay circuit. Imagine you finished a normally OCL power amplifier. Every time you turn on within the first 3 seconds. You may hear sound “tlub…” on a loudspeaker. You feel annoyed that sound, right? Important, this sound is a high spike voltage. It can damage the loudspeaker. … Read more
It will prevent the speaker from too over high power output may speaker damaged it use transistor and relay cut off as safe. Read more
This is overload protection for transformers and load, is simple circuit cut off-on by relay. And so fast switch witch SCR driver. can set sensitive by VR1 Read more
The simple audio signal overload protection circuit. Why use it? it will protect input of power amplifier away high amplitude, more than1Vrms. Easy circuit! Read more
These are over voltage and low voltage protection circuits, first is simple use LM324 and relay, second is LM393, timer delay IC. both to protect any load. […] Read more