Hi,
I am a newby (to electronics).
One of the introductory circuits I am building adds a motion detector function to an existing rechargeable LED work light.
The PIR I am using outputs 3.3V.
The relay (reed relay) I am using has a pickup voltage of 3.5V.
I need to raise the PIR signal from 3.3V to 3.5V or greater.
I have tried to increase the voltage using a step-up booser but it is set to 5V as output and I think the PIR signal does noty provide enough current.
I am currently looking at a joule thief but are not optimistic.
What is a simple approach to "raise the PIR signal from 3.3V to 3.5V or greater"?
These are the specs:
Ultimate Bat Light
Battery
3.7 V, Li-ion, 1800 mAh
Charging Unit
6 V DC, 300 mA
PIR HC-SR501
Voltage: 5V - 20V
Power Consumption: 65 mA
TTL output: 3.3V, 0V
Current Drain <60uA
Reed Relay
CAT. NO.: SY4036
Contact form: SPST normally open
Coil resistance: 500ohms
Pickup Voltage: 3.5V DC
Allowable Voltage: 160%
Power Consumption (W): 0.1
Contact Rating: 1A - 5 VOLT
Thanks,
Nic
I am a newby (to electronics).
One of the introductory circuits I am building adds a motion detector function to an existing rechargeable LED work light.
The PIR I am using outputs 3.3V.
The relay (reed relay) I am using has a pickup voltage of 3.5V.
I need to raise the PIR signal from 3.3V to 3.5V or greater.
I have tried to increase the voltage using a step-up booser but it is set to 5V as output and I think the PIR signal does noty provide enough current.
I am currently looking at a joule thief but are not optimistic.
What is a simple approach to "raise the PIR signal from 3.3V to 3.5V or greater"?
These are the specs:
Ultimate Bat Light
Battery
3.7 V, Li-ion, 1800 mAh
Charging Unit
6 V DC, 300 mA
PIR HC-SR501
Voltage: 5V - 20V
Power Consumption: 65 mA
TTL output: 3.3V, 0V
Current Drain <60uA
Reed Relay
CAT. NO.: SY4036
Contact form: SPST normally open
Coil resistance: 500ohms
Pickup Voltage: 3.5V DC
Allowable Voltage: 160%
Power Consumption (W): 0.1
Contact Rating: 1A - 5 VOLT
Thanks,
Nic