Pine Racecar Victory Judge

Home > Circuits > Other > Pine Racecar Victory Judge

Search:

Author	Views	Views Today	Rank	Comments
	105,270	2		1

Schematic

Parts

Part Total Qty. Description Substitutions R1, R2 2 100 Ohm 1/4W Resistor R3, R4 2 100K 1/4W Resistor D1, D2 2 Standard LED SCR1, SCR2 2 6A, 200V SCR (such as the 106B) S1, S2 2 See Notes K1 1 Small 12V Relay MISC 1 Board, Wire

Notes

1. S1 and S2 are small lever type micro switches. Most any kind will do, as long as they are sensitive enough to be activated by the wheels of the cars. They should be positioned on the track so that the front wheels of the cars will run over them as the cars just cross the finish line.
2. To reset the circuit, disconnect and then reconnect power. You can add a normally closed switch in series with the power supply to make this easier.
3. There is no reason this circuit cannot be used to tell the winner of a foot race, bike race, slot car race, etc.

If you would like to leave a comment, you can do so using the form below. Comments can be things like suggestions, successes or failures, improvements, similar circuits, error reports, an answer to a previous commenter's question, or anything in between. However if you would like to ask a question it is suggested that you use the forum instead. The forum provides a more robust environment for discussion.

Important: If you post a technical question here, there is no guarantee it will be answered. All technical questions should be posted to the forum. The owner of this site generally does not answer questions in comments.

All comments are subject to approval before they are displayed here, so your comment will not appear immediately. This is done mainly to prevent spam and other abuse. If you wish to remain anonymous, simply enter "anonymous" for your name and/or email.

Name:
Email:
Subject:
Comments:
Anti Spam Code:	Please enter the exact text shown in the image above into the box below. Browser cookies must be enabled to comment on circuits.
Privacy Policy

Back To Circuits Page | Mail Me | Search |