Astable Multivibrator Driven Relay flasher

133

02:22:45

This circuit is just showing an example of how to use an astable Multivibrator to drive a relay for the purpose of cycling such as with a flasher.

published 6 years ago

hurz

6 years ago

but the driver transistor is in common base and does not help to unload the right flasher transistor. It even increases the current a lot with additional base current Ib, cuz the base resistor is quite low with 330 Ω. Better use a common emitter topology for the driver.

BillyT

6 years ago

Comparing emitter V collector driven relays, with higher values of biasing resistors. http://everycircuit.com/circuit/4794211243917312

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