Simple LED indication control circuit
The utility model discloses a simple LED indication control circuit, comprising a transformer T1 and a triode Q1, a secondary side of the transformer T1 is connected in parallel with a capacitor C1, the capacitor C1 is grounded, a secondary side of the transformer T1 is connected in series with a di...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a simple LED indication control circuit, comprising a transformer T1 and a triode Q1, a secondary side of the transformer T1 is connected in parallel with a capacitor C1, the capacitor C1 is grounded, a secondary side of the transformer T1 is connected in series with a diode D1, the capacitor C1 is connected in parallel with a resistor R1, a light emitting diode LED1 and the triode Q1, and the resistor R1, the light emitting diode LED1 and the triode Q1 are grounded. The resistor R1 and the light emitting diode LED1 are connected in series and then are connected with a collector electrode of the triode Q1, the resistor R2 and the diode D2 are connected between a base electrode and an emitting electrode of the triode Q1, and the resistor R1, the light emitting diode LED1 and the triode Q1 are connected with the resistor RL in parallel. The utility model has the advantages that the circuit is simple, the cost is low, and the control is convenient.
本实用新型公开了一种简易LED指示控制电路，包括变压器T1和三极管Q1， |
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