Q1 and Q2 cooperate with C to double VL for actuation, Q2 and D2 sustain, then Q3 rapidly discharges C through R to quickly recover for the next cycle
| Authors | Stephen Woodward |
| Main Document | Article «Relay and solenoid driver circuit doubles supply voltage to conserve sustaining power» |
| Description | Figure 2 |
| File Format / Size | PDF / 9 Kb |
| Document Language | English |
Other Materials from the Main Document
- Article «Relay and solenoid driver circuit doubles supply voltage to conserve sustaining power»
- Figure 1. Basic driver circuit where C1 actuates, current-halving R1 sustains, then C1 discharges through R1 during TOFF
- Figure 2. Q1 and Q2 cooperate with C to double VL for actuation, Q2 and D2 sustain, then Q3 rapidly discharges C through R to quickly recover for the next cycle
- Figure 3. Level shifting Q4, R1, and R2 are added to accommodate V++ > VL
