Ultra fast acting electronic circuit breaker circuit diagram
A very specific and interesting request!
Here's a circuit diagram for an ultra-fast acting electronic circuit breaker, also known as a crowbar circuit:
Circuit Diagram:
R1 = 1 kΩ R2 = 2 kΩ R3 = 1 kΩ R4 = 2 kΩ C1 = 100 nF C2 = 100 nF D1 = 1N4148 (or similar fast-recovery diode) D2 = 1N4148 (or similar fast-recovery diode) Q1 = NPN transistor (e.g., 2N3904) Q2 = PNP transistor (e.g., 2N3906) VCC = 12 V (or similar voltage supply) VOUT = Output voltage (e.g., 5 V)
How it works:
- When the input voltage (VCC) exceeds a certain threshold (e.g., 10 V), the circuit breaker is triggered.
- The voltage across R1 and R2 creates a current that flows through D1, which is a fast-recovery diode.
- The current through D1 triggers Q1, a NPN transistor, which turns on and connects the output (VOUT) to ground.
- The sudden drop in output voltage causes the load to be disconnected from the power supply.
- The circuit breaker remains in the "tripped" state until the input voltage returns to a safe level (e.g., below 10 V).
- When the input voltage returns to a safe level, Q1 turns off, and the circuit breaker returns to its normal state.
Key components:
- Fast-recovery diodes (D1 and D2) are used to quickly switch the current and minimize the delay in triggering the circuit breaker.
- NPN and PNP transistors (Q1 and Q2) are used to switch the output voltage and create a fast-acting circuit breaker.
- Capacitors (C1 and C2) are used to filter the input voltage and reduce noise.
Notes:
- The values of the resistors, capacitors, and diodes may need to be adjusted depending on the specific application and requirements.
- The circuit breaker may not be suitable for high-power applications or applications that require a high level of isolation.
- The circuit breaker may not be suitable for use in applications where the input voltage is not well-regulated or where the output voltage is not well-filtered.