Debounce and Trigger Signal for ELCU Flasher - Fix 2.0

Requirements for Bi-Level Refurb Contract ELCU: Flasher Signal On Duration must be > 0.001 seconds and < 3 seconds Proposed Circuit Fix to accommodate ELCU signal requirements: Circuit Signal On Duration: ~ 1 seconds +- 0.1 Second Current Circuit Reset Duration: > 0.1 Seconds 2.0 Changes-Upgrades of Flasher Switch Signal Fix since 1.0 Positive Upgrades 1. Output Impendence is no longer a variable on circuit performance 2. Output Signal's rising edge and falling edge are sharper and more defined 3. Designed to have common parts, such as resistors and capacitors, to simplify ordering of parts, simplify manufacturing, and to lower cost overall assembly costs. Negative Trade-off 3. More Components increase costs 4. Increased circuit complexity and size increase manufacturing time 5. More complicated wiring change to Car circuitry to implement Circuit Operation: 1. Closing Switch activates High signal output for limited time determined by the "Signal On Capacitor" and "Signal On Resistor" Values 2. Switch must be released momentarily to reset signal functions 3. Switch will not continue to send a signal if the Switch is held closed Ideal Parts Needed: 4 x 100kOhm Resistors 1 x 555 IC 2 x 10uF Capacitors 1 x N-Channel MOSFET 1 x 1nF Capacitors (Optional - 555 Control Pin can be alternatively left as a no connect Pin with potential stability issues)

published 1 year ago