Sounds like it is probably a Schmitt trigger in that little tin box.
http://hyperphysics.phy-astr.gsu.edu/hbase/Electronic/schmitt.html
If you are into 70's rock you have probably heard them in action on guitar effects pedals.

Entire Thread
Subject	Posted By	Posted
Points - Electronic Module Replacement?	NormK	31/05/17 06:35 PM
Re: Points - Electronic Module Replacement?	Millzy555	31/05/17 06:59 PM
Re: Points - Electronic Module Replacement?	NormK	31/05/17 07:25 PM
Re: Points - Electronic Module Replacement?	Millzy555	31/05/17 08:17 PM
Re: Points - Electronic Module Replacement?	NormK	31/05/17 08:31 PM
Re: Points - Electronic Module Replacement?	Gadge	31/05/17 09:03 PM
Re: Points - Electronic Module Replacement?	NormK	31/05/17 09:33 PM
Re: Points - Electronic Module Replacement?	Gadge	31/05/17 09:57 PM
Re: Points - Electronic Module Replacement?	aussietrev	01/06/17 08:20 AM
Re: Points - Electronic Module Replacement?	NormK	01/06/17 08:46 AM
Re: Points - Electronic Module Replacement?	freebird	01/06/17 10:38 AM
Re: Points - Electronic Module Replacement?	vint_mow	02/06/17 08:22 PM
Re: Points - Electronic Module Replacement?	NormK	02/06/17 09:04 PM
Re: Points - Electronic Module Replacement?	Gadge	03/06/17 05:53 AM
Re: Points - Electronic Module Replacement?	NormK	07/06/17 09:11 AM
Re: Points - Electronic Module Replacement?	Converse	19/05/19 02:04 AM
Re: Points - Electronic Module Replacement?	NormK	19/05/19 02:14 AM
Re: Points - Electronic Module Replacement?	Converse	19/05/19 02:47 AM
Re: Points - Electronic Module Replacement?	NormK	19/05/19 03:48 AM
Re: Points - Electronic Module Replacement?	Converse	19/05/19 04:22 AM
Re: Points - Electronic Module Replacement?	Mowerfreak	19/05/19 04:43 AM
Re: Points - Electronic Module Replacement?	NormK	19/05/19 08:50 AM
Re: Points - Electronic Module Replacement?	Mowerfreak	19/05/19 09:02 AM
Re: Points - Electronic Module Replacement?	thecarbymaster	19/05/19 11:27 AM
Re: Points - Electronic Module Replacement?	Converse	20/05/19 02:49 AM
Re: Points - Electronic Module Replacement?	NormK	20/05/19 02:57 AM
Re: Points - Electronic Module Replacement?	thecarbymaster	20/05/19 03:45 AM
Re: Points - Electronic Module Replacement?	Converse	04/09/19 03:09 AM
Re: Points - Electronic Module Replacement?	NormK	04/09/19 06:22 AM
Re: Points - Electronic Module Replacement?	Converse	04/09/19 05:36 PM
Re: Points - Electronic Module Replacement?	NormK	20/11/19 06:14 AM
Re: Points - Electronic Module Replacement?	AVB	20/11/19 11:54 AM
Re: Points - Electronic Module Replacement?	NormK	20/11/19 07:57 PM

Moderated by bigted, Bruce, CyberJack, Gadge, Mr Davis

Link Copied to Clipboard

Forum Donation

These Outdoorking Forums have helped Thousands of people in finding answers to their equipment questions.

If you have received help, please consider making a donation to support the on-going running cost of these forums.

September
M	T	W	T	F	S	S
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30

ShoutChat

Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.

Newest Members

Panhead, Nappy12, Brodie410, Blake B, Camdawson
17,605 Registered Users

Forum Statistics

Forums145

Topics12,999

Posts106,900

Members17,605

Most Online16,069
Sep 18th, 2025

OutdoorKing Showcase

20 Bucks from FB Marketplace
by Return Rider, February 20

Victa Cortina 2 Shed Find
by Return Rider, January 25

My Rover Baron 45
by Maxwell_Rover_Baron, April 16

SHOWCASE - Precision Mowers - 2021
by CyberJack, April 14

SHOWCASE – Atco Rotary – Paul C - 2020
by CyberJack, December 28

HOME |CONTACT US

Responsive Width:

PHP: 8.3.25 Page Time: 0.080s Queries: 18 (0.074s) Memory: 0.6808 MB (Peak: 0.6978 MB) Data Comp: Zlib Server Time: 2025-09-29 14:28:19 UTC
Valid HTML 5 and Valid CSS