The circuit can be delayed and led excitation speaker dc protection circuit.A current of approx. 70mA. The appropriate value for the high voltages are selectable Rs resistance.
For example: Amplifier 2x24Vac with the feed from the same place, we can get this circuit.Aim will be about how to find the value and power of direncimizin 34Vdc.
Rs = (34-17)/0.07 WRs = (34-17) x 0.07
Rs = 243 ohm WRs = 1.2 W
547 = BC547, 139 = BD139
250 k potentiometer with approximately 1-9 sec delay setting. Operation of the circuit in addition to certain clear min. 0.8 V is active.
Speaker protection circuit PCB files:
FILE DOWNLOAD LINK LIST (in TXT format): LINKS-21725.zip
Published: 2013/06/14 Tags: audio control circuits
Stabilized Regulated Power Supply Circuit with L200CV 0-30V
To reach the simple design of the power supply and at the same time easy output voltage and current limit, I decided to use the well-known monolithic integrated Adjustable voltage and current regulator L200 series in the case Pentawat with five outlets by ST Microelectronics. The voltage can be set to the values of two external resistors in range from 2.75 V to 36.0 V, provided that the input supply voltage is at least 2.5 V higher. Otherwise, the maximum input voltage that can withstand circuit is 60 V. Compared to other similar circuits, there is also still a possibility and simply set size of the output current. If this setting is not used, is current limited internally to approximately 2A (3,6 A),
Lautsprecher DC-Schutzschaltung verzögert und LED-Alarm
Die Schaltung kann verzögert werden und führte Erregung Lautsprecher DC Schutzschaltung. Ein Strom von ca.. 70mA. Der geeignete Wert für die hohen Spannungen ist wählbarer Rs-Widerstand.
Zum Beispiel: Verstärker 2x24Vac mit dem Feed von der gleichen Stelle, können wir diese Schaltung bekommen.Am wird es sein, wie Sie den Wert und die Leistung von direcimizin 34Vdc finden.