Blue light LED lamp protection system with amplification type field intensity detection circuit
A LED lamp, field strength detection technology, applied in the direction of overcurrent protection, automatic disconnection emergency protection device, electric light source, etc., can solve the problems of high energy consumption, poor comprehensive protection, complex structure, etc. Achieve the effects of improving sensitivity and precision, low power consumption, and overcoming delay effects
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[0024] Such as figure 1As shown, the blue LED lamp protection system of the present invention consists of a gate drive circuit, a logic control circuit, an oscillator, a power amplifier P1, a power amplifier P2, a pulse comparator U1, a pulse comparator U2, a field effect transistor MOS1, a field It is composed of effect tube MOS2, field effect tube MOS3 and field effect tube MOS4, beam excitation logic amplifier circuit, and amplified field strength detection circuit.
[0025] When connected, the output terminals of the power amplifier P1, the output terminals of the power amplifier P2, the output terminals of the pulse comparator U1 and the output terminals of the pulse comparator U2 are all connected to the logic control circuit, and the two output terminals of the oscillator are respectively It is connected with the negative input terminal of the pulse comparator U1 and the negative input terminal of the pulse comparator U2 to ensure that the oscillator can provide PWM wid...
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