clm6000 are they weak or broken?

[loss1234]

i just got a batch of clm6000's from ebay. 25 of em. but when i swapped out a vtlc53 that i had in a circuit with the clm6000, it barely did anything! i hooked a few of them up to an led to see if they were working, and sure enough they lit up the LED when connected to voltage and didnt when disconnected.

so they seem to work but they dont seem to be very strong. is this just how they are designed?

thanks

[danielzink]

If you go to the Smallbear website and type clm into the search box - you'll pull up 3 different clm6000's that are available from them.

#1 choice:



Photocoupler Clairex CLM6000 O.S.
Out-of-Spec. Ron 1K ohm up. 
SKU: 2511

An inexpensive way to get some high-quality assorted photocouplers


PRICE:  $2.50   


#2 choice:



Photocoupler Clairex CLM6000 S.O.S.
Slightly Out-of-Spec. Tested to Ron under 1K ohm.

SKU: 2512

These will work in circuits that specify the CLM6000


PRICE:  $6.00



and #3:

Photocoupler Clairex CLM6000
SKU: 2513

These have been tested to the factory spec of under 500 ohms Ron. The yield is small, so they are more expensive.


PRICE:  $7.95



Maybe you got a batch of "out-of-spec" ones ?

Dan

[smallbearelec]

The measurement should be done at 20 ma. forward into the LED side. Connect four AA batteries in series (Don't use a power supply with a cap on the output...the charging of the cap will louse up the reading). Connect that roughly 6 volts in series with a 220 ohm resistor and the LED side. If you want to be more precise, adjust that resistor value so that the current is exactly 20 ma. Then measure the resistance of the LDR with the LED side illuminated.

A "Good" CLM6000 will measure under 500 ohms. Clairex was selling bulk lots of these before they stopped making CdS devices, and the range of Ron in the ones I got was extremely wide.

SD